On-Site PCR in 90 Minutes: Portable Devices, Accuracy, and Real-World Costs

When a pig on a farm shows abnormal symptoms, the waiting time for test results can directly affect disease-control decisions. Sending samples to a traditional laboratory can take around 24–72 hours to receive results, depending on transport distance, sample intake procedures, the type of test, and the laboratory’s working schedule.

This is why on-site PCR, also known as point-of-care molecular testing, is gaining attention as a supporting tool in livestock disease management. This technology does not completely replace official laboratories, but it can help farms obtain information more quickly in the early stage of a suspected outbreak.

What is on-site PCR, and why do livestock farms need this technology?

The core difference between portable PCR on farms and traditional laboratory PCR

PCR, short for Polymerase Chain Reaction, is a technique that amplifies genetic material to detect the presence of pathogens. For pathogens whose genetic material is DNA, PCR can directly amplify the target DNA segment. For pathogens whose genetic material is RNA, the process usually requires a reverse transcription step to convert RNA into cDNA before amplification. This is commonly known as RT-PCR or RT-qPCR.

In a traditional laboratory, this process usually requires fixed equipment, a suitable working space, cross-contamination control procedures, and highly trained technicians. Samples need to be transported, registered, processed according to laboratory protocols, and returned through a reporting system.

Portable PCR — or on-site PCR testing — refers to a group of devices designed to shorten the time from sample collection to results, serving situations where fast decisions are needed on site or near the farm. The device can be placed in the farm’s technical area, a mobile testing vehicle, or a satellite laboratory.

Depending on the device type, portable PCR may be a closed cartridge-based system that integrates multiple sample-processing steps, or it may only be an amplification/signal-detection device that needs to be combined with a separate nucleic acid extraction step. Therefore, not every portable PCR device should be understood as a simple “sample-in, result-out” system. The actual workflow depends on the machine, kit, sample type, level of automation, and operator skill.

With some current systems, instrument run time can be shortened to around 30–90 minutes. However, the total time from sample collection to results may be longer when sample collection, sample processing, extraction, reaction preparation, and post-test decontamination are included.

Why do results within a few hours matter in livestock farming?

In industrial livestock farming, the speed of pathogen detection directly affects disease-control decisions: isolating suspected areas, pausing animal sales or animal shipments, strengthening disinfection, calling a veterinarian, sending samples for confirmation, or activating emergency response procedures.

If test results arrive too late, farms may have to make decisions based on clinical observation and experience, or delay their response while waiting for results. Both situations carry risks: responding too slowly may allow the disease to spread, while responding too aggressively without sufficient evidence may create unnecessary costs.

The ability of some portable PCR/RT-PCR or iiPCR devices to return results within the same testing session creates an opportunity for veterinarians or farm managers to obtain earlier data. However, these results should be viewed as initial supporting information, especially for dangerous diseases that require confirmation by an accredited laboratory or a laboratory designated by the competent authority.

Comparing portable PCR, laboratory PCR, and other rapid diagnostic methods

Comparison table: time to result, accuracy, cost per test, and staffing requirements

Criteria	Traditional laboratory PCR	On-site portable PCR	Rapid antigen test
Time to result	Usually around 24–72 hours, depending on transport and laboratory workflow	May be around 45–90 minutes or longer, depending on the machine, kit, and sample-processing workflow	Usually around 15–30 minutes
Sensitivity	Very high if sample quality is good and the procedure follows proper standards	Can be high, but depends on the device, kit, sample type, and operating conditions	Usually lower than molecular testing, especially when pathogen load is low
Specificity	Very high if the assay has been well validated	Can be high, but specific validation data for each assay should be reviewed	Can be good with some kits, but caution is still needed in situations that require confirmation
Cost per test	Low to moderate when sending large sample volumes or using appropriate pooled samples	Moderate to high due to specialized kits and device operating costs	Lower, suitable for rapid screening in certain situations
Equipment requirements	Fixed laboratory, standard equipment, and quality-control procedures	Portable or compact device, power supply/battery, suitable kit, and correct operating procedure	No machine required, or only a simple reader depending on the kit
Staffing requirements	Trained laboratory technicians	Operators need training; result interpretation should be supported by a veterinarian or technical specialist	Easier to perform, but users still need to understand the test’s limitations
Ability to detect specific pathogens	Yes, if a suitable assay is available	Yes, if a suitable kit/assay is available	Can detect the target antigen of a specific pathogen, but does not replace PCR in situations requiring confirmation
Legal validity	May be used for official procedures if performed by an accredited/designated laboratory	Mainly for screening or supporting initial decision-making, depending on regulations and the organization operating the test	Mainly supports screening and should not be used alone for major decisions

Note: The sensitivity, specificity, time-to-result, and cost indicators in the table are for general guidance. When evaluating an investment, farms should ask suppliers for specific validation data for each disease, kit, sample type, and real operating conditions.

When is on-site PCR more suitable than sending samples to a laboratory, and when is it not?

Portable PCR is most suitable in the following situations:

• The farm is monitoring a suspected case and needs quick data to decide whether to isolate the area temporarily.
• The farm is geographically far from a laboratory, making sample transport time-consuming.
• The farm needs rapid screening for breeding herds, newly introduced animals, or high-risk animal groups.
• A large-scale farm has a high enough testing frequency to operate the device regularly.
• The farm has a veterinarian or trained technical staff who can collect samples, operate the machine, and read results.

Portable PCR is not suitable, or should not be used as a replacement for laboratory testing, in the following cases:

• Legal confirmation is required for disease declaration, culling, compensation, or official disease-control measures.
• Genetic sequencing is needed to identify the strain, variant, or source of infection.
• The farm does not have stable technical personnel.
• Testing frequency is too low, making it difficult to recover the cost of the device and kits.
• There is no stable kit supply, or it is unclear whether the kit is permitted for local use.

In situations requiring official confirmation, portable PCR should serve as an initial screening tool. Positive or suspected samples still need to be sent to an accredited or designated laboratory according to the guidance of veterinary authorities.

Common groups of portable PCR devices for livestock farming and the situation in Vietnam

Technical features to check before choosing a device

Some groups of devices commonly mentioned in on-site or near-site molecular testing include:

Closed cartridge-based systems

This device group has the advantage of simplifying operation, reducing the risk of cross-contamination, and being suitable for operators who receive short-term training. Users usually load the sample, or the processed sample, into the cartridge, after which the machine performs the remaining steps according to the designed workflow.

However, the test/kit portfolio depends heavily on the manufacturer and the markets where the device or kit is approved. It should not be assumed that a well-known cartridge-based system in human healthcare will have suitable veterinary kits available for livestock farming. Before investing, farms need to clearly confirm with the manufacturer or distributor regarding the assay/kit, supported sample types, validation data, and legal scope of use in Vietnam.

Compact real-time PCR or open-platform systems

This group is more suitable for fixed laboratories, satellite laboratories, or mobile testing vehicles with stable operating conditions. Its advantage is greater flexibility in kit selection, and it may use different assays if they have been properly validated. The drawback is that operation is usually more complex, may require manual master mix preparation, and requires operators with a molecular biology background.

Compact systems should not be understood as handheld devices used directly inside barns. They still require a clean working area, cross-contamination control, and a stable power supply.

iiPCR and other field molecular testing systems such as POCKIT

Some systems, such as POCKIT/POCKIT Micro, are designed for field testing and are based on iiPCR technology. This group has the advantages of easy operation, fast instrument run time, and potential suitability for veterinary, aquaculture, and agricultural applications.

However, the total time from sample collection to results still depends on the extraction step, sample type, and kit workflow. The availability of kits for ASF, PRRS, avian influenza, or other diseases should be confirmed with the manufacturer or distributor in Vietnam.

Handheld devices connected to a phone or tablet

This group is suitable for rapid field surveys or mobile service models. Its advantages are light weight, flexibility, and easy mobility. Its drawbacks are often low sample throughput, dependence on specialized kits, and limited suitability when farms need to test a large number of samples within a short time.

Suppliers, warranty conditions, and after-sales technical support in Vietnam

In Vietnam, portable PCR devices in the veterinary field are often imported and distributed through scientific equipment companies, medical device suppliers, molecular biology companies, or businesses specializing in livestock and veterinary solutions. When considering a purchase, farms should not compare only the initial machine price. They should carefully ask about the following factors:

• Does the device support the exact disease that needs to be tested?
• Are kits available in Vietnam, or must they be imported batch by batch?
• Does the kit have validation data for the intended sample type and disease?
• Does the distributor provide training on sample collection, operation, and troubleshooting?
• Are calibration, maintenance, and spare-parts replacement services available in Vietnam?
• What are the specific warranty conditions?
• Is the device suitable for the farm’s power supply, temperature, humidity, and operating environment?
• Can results from the device be used for official purposes, or only for internal screening?

Kits are critical consumables. If the supplier cannot maintain a stable kit supply, the device may experience interruptions in use even if the machine itself is still functioning well.

Accuracy of portable PCR in livestock disease diagnosis: reference information

How should sensitivity and specificity be understood?

The accuracy of portable PCR should not be evaluated using one general number for all machines and all diseases. Indicators such as sensitivity and specificity depend on many factors:

• Device type
• Kit/assay type
• Sample type: blood, serum, nasal or tracheal fluid/swabs, feces, and tissue
• Disease stage at the time of sampling
• Pathogen load
• Sample storage quality
• Skill of the sample collector and device operator
• Cross-contamination control conditions
• Result interpretation thresholds set by the manufacturer

Some studies on ASF show that portable PCR/iiPCR devices can achieve performance close to reference testing under research conditions. However, results from one study on one disease should not be applied to every device, every kit, and every farm condition.

Therefore, a safer way to phrase the issue is: portable PCR can achieve high accuracy if it has been well validated and is operated according to the correct procedure, but farms need to request specific validation data for the device and kit they plan to use.

Factors that cause false negatives and false positives

A sample collected too early, when pathogen load is not yet high enough, may return a negative result even though the animal is in the early stage of disease. Samples that degrade due to incorrect storage temperature, incorrect sampling location, or improper transport can also reduce result reliability.

On the other hand, false positives may occur if samples are cross-contaminated during sample collection, tube opening, sample loading, or post-test handling. In a barn environment, the risk of cross-contamination is higher than in a laboratory if there is no clear SOP.

Therefore, portable PCR results need to be interpreted in the clinical, epidemiological, and sampling context. A positive result for a dangerous disease should not be used alone to make legal decisions without confirmation from a competent veterinary authority or professional body.

Practical application in Vietnam: initial observations and limitations that need clarification

In Vietnam, rapid molecular testing and on-site PCR/iiPCR have attracted attention in the context of controlling dangerous diseases such as African swine fever. However, the actual level of deployment at commercial farms, application scale, operating effectiveness, and legal value of results need to be confirmed through official reports or information from professional authorities.

In practice, portable PCR should be viewed as a screening tool or as support for internal decision-making in the early stage. When there is a positive or suspected result for a dangerous disease, farms still need to report to the local veterinary authority and send samples to an accredited or designated laboratory for confirmation according to current legal requirements.

If official data are needed on disease lists, reporting procedures, or the legal value of test results, livestock producers should contact the Department of Livestock Production & Animal Health, Ministry of Agriculture and Environment, or the local livestock and veterinary management authority.

Real-world costs and ROI calculation when investing in portable PCR for farms

Device price, test kit costs, and annual operating costs

The cost of portable PCR devices varies widely depending on device model, number of modules, sample throughput, level of automation, import policy, warranty, training, and included technical services.

Some handheld or compact field devices may require lower investment than closed cartridge-based systems or compact real-time PCR systems. However, specific prices vary by supplier and timing. Therefore, any figures in this article should be treated as reference estimates only, not official quotations.

In addition to the machine price, test kit cost is a decisive factor in long-term operating costs. Depending on the disease, manufacturer, purchase quantity, and distribution policy, the cost per sample can vary significantly. Some specialized kits may cost more than sending samples to a laboratory when testing in large volumes, but in return they provide faster results and support on-site decision-making.

Annual operating costs may include:

• Test kits
• Swabs, sample tubes, and consumables
• Chemicals or extraction kits if needed
• Gloves, masks, and protective equipment
• Periodic calibration
• Equipment maintenance
• Training for new staff
• Post-test waste handling
• Electricity, batteries, or UPS if operating in areas with unstable power supply

Cost per test comparison: self-operated portable PCR, laboratory testing, and on-site testing services

Testing method	Cost per test	Time to result	Notes
Traditional laboratory PCR	Usually more economical when sending large sample volumes or using suitable pooled samples	Usually around 24–72 hours	Suitable for official confirmation if the laboratory is accredited/designated
Self-operated portable PCR	Cost per sample depends mainly on kits, consumables, and device depreciation	May return results within the same working session if the workflow is well operated	Suitable for large farms with frequent testing needs
Mobile PCR service	Cost per sample is usually higher than self-operation if used frequently	May be within a few hours, depending on travel schedule and service workflow	Suitable for farms that do not want to invest in their own device yet

All cost figures need to be confirmed directly with suppliers at the time of purchase or service rental. Prices may change depending on the disease being tested, kit type, geographic area, exchange rate, sample volume, and service contract.

Calculating payback time based on real herd or flock size

To evaluate ROI, farms should not compare only the cost per test. They also need to account for losses caused by delayed diagnosis, spread risk, isolation costs, culling costs, disinfection costs, and disruption to animal sales or shipments.

For example, on a large pig farm, if a dangerous disease is detected several days late and the pathogen spreads to many pens, the losses may far exceed testing costs. In that case, a portable PCR device can create value if it helps the farm screen quickly, isolate earlier, and send confirmation samples at the right time.

However, this is only a way of thinking about ROI. It is not a promise that the device will pay for itself after one outbreak. Actual effectiveness depends on testing frequency, disease risk level, quality of the response procedure, herd or flock value, and the farm’s operating capacity.

For small farms with fewer than 200–300 animals or low testing frequency, buying a device is usually difficult to justify economically if it is used only internally. In this case, using a mobile PCR service or sending samples to a laboratory may be more economically suitable, unless the farm is far from a laboratory and has high disease risk.

Applications of on-site PCR for common livestock and poultry diseases

Early detection of ASF, PRRS, avian influenza, PCV2, PPV, and respiratory diseases

Portable PCR/RT-PCR/iiPCR kits in the veterinary field usually focus on diseases with major economic impact or those requiring rapid response. The supported kit portfolio can differ between device models and markets, so farms need to confirm directly with suppliers.

Some commonly monitored disease groups include:

African swine fever (ASF)

ASFV detection kits usually use blood, serum, tissue, or other sample types according to kit instructions. For ASF, laboratory testing remains very important because the disease cannot be confirmed by clinical signs alone.

PRRS – Porcine Reproductive and Respiratory Syndrome

Testing may use serum, lung fluid samples, or other suitable samples according to kit instructions. PCR/RT-PCR is often useful in monitoring breeding herds, sow herds, or suspected respiratory-reproductive problems.

Avian influenza H5N1/H5Nx

This usually requires samples such as oropharyngeal swabs, tracheal swabs, cloacal swabs, or other samples according to veterinary guidance. This disease group requires rapid response and compliance with reporting regulations.

PCV2 and PPV

PCV2 stands for porcine circovirus type 2, while PPV stands for porcine parvovirus. These are two different agents and should not be grouped together under the name “porcine parvovirus.” Depending on the testing objective, farms need to confirm whether the kit detects PCV2, PPV separately, or whether a multiplex kit can detect multiple agents at the same time.

Porcine respiratory disease complex (PRDC)

Some multiplex kits may support the detection of multiple respiratory agents at the same time. However, results need to be interpreted by a veterinarian together with symptoms, herd history, vaccination history, barn conditions, and epidemiological data.

Integrating portable PCR into the farm’s disease monitoring and alert system

Portable PCR is most effective when integrated into a broader disease surveillance workflow, not only used when severe symptoms have already appeared. A farm can build testing procedures for different situations:

• Testing newly introduced animals before they enter the main herd
• Periodic testing of breeding herds or high-value groups
• Emergency testing when suspicious signs are detected
• Testing after alerts from cameras, sensors, or manual observation
• Follow-up testing after treatment or after an isolation period, if indicated by a veterinarian

Testing data should be recorded in the herd health management system, including the sampling date, sample type, barn location, symptoms, result, sample collector, kit used, and post-test decision. Systematic data storage helps farms identify trends, evaluate disease-prevention effectiveness, and improve procedures across production cycles.

Step-by-step process for using portable PCR on farms

Step 1 – Identify the appropriate sample type for each disease

Not every sample type is suitable for every disease. Collecting the wrong sample type is one of the common causes of false negatives.

For example:

• ASF often prioritizes blood, serum, tissue, or sample types according to kit and veterinary authority guidance.
• PRRS is often detected from serum, lung fluid samples, or suitable samples according to testing instructions.
• Avian influenza may require oropharyngeal, tracheal, or cloacal swabs, or other samples guided by veterinary authorities.
• Diarrheal diseases may require feces, intestine, or tissue samples depending on the suspected agent.

Before sampling, farms need to clearly identify: what disease is suspected, which animal should be sampled, where the sample should be taken, how many samples are needed, and how they should be stored.

Step 2 – Collect samples properly and store them before running the machine

Samples should be collected using sterile tools and placed into tubes or storage media suitable for each disease, sample type, and kit.

It should not be assumed that every sample uses VTM. VTM may be suitable for some swab samples, but blood, serum, tissue, feces, or organ fluids may require different tubes and storage conditions.

Storage temperature and storage time should also follow the instructions of each kit. If the machine is not run immediately, the sample collector should ask the kit supplier, veterinarian, or veterinary authority about suitable storage conditions to avoid nucleic acid degradation or reduced result reliability.

Step 3 – Prepare the kit, load the sample, and operate the device

With a closed cartridge-based system, operation can be relatively simple: prepare the sample according to instructions, load it into the cartridge, close the lid, and place it into the machine. However, even simple systems still require strict compliance with the procedure to avoid sample errors, loading errors, or cross-contamination.

With an open-platform system, the operator may need to perform additional steps such as nucleic acid extraction, master mix preparation, dividing the reaction into tubes or wells, and program setup. This group requires stronger molecular biology skills and a cleaner working area.

In all cases, farms need a written SOP covering sample collection, labeling, storage, sample loading, machine operation, result reading, decontamination, and post-test waste handling.

Step 4 – Read and interpret PCR results

Quantitative or semi-quantitative PCR results are usually expressed through Ct values. A low Ct value usually suggests a higher nucleic acid load of the pathogen. A high Ct value should be interpreted carefully because it may be related to low pathogen load, poor sample quality, cross-contamination, or a signal close to the detection threshold.

A fixed Ct threshold should not be used for every disease, kit, and device. Ct interpretation should be based on each assay’s instructions, sample type, clinical context, and the opinion of a veterinarian or laboratory specialist.

For devices that display only qualitative results such as Positive/Negative, operators need to carefully review the manufacturer’s instructions on detection limits, suitable sample types, and situations that require retesting.

Staffing, training, and legal requirements when implementing PCR on farms

Minimum qualifications needed for operation

With closed cartridge-based systems, a person with a basic technical background can be trained to perform sampling, sample loading, and initial result reading. However, interpreting results in the clinical and epidemiological context requires the involvement of a veterinarian or a qualified technical specialist.

With open-platform systems, operators should have knowledge of molecular biology, cross-contamination control, and PCR workflows. If the procedure is performed incorrectly, results may not be reliable even if the device and kit are of good quality.

Farms need to provide training in at least the following areas:

• Sampling at the correct site
• Labeling and sample ID management
• Sample storage
• Using kits within their expiry dates and under correct storage conditions
• Operating the machine
• Preventing cross-contamination
• Basic result reading
• Handling positive, negative, inconclusive, or machine-error results
• Decontaminating the working area
• Recording and storing test records

Is on-site PCR recognized by veterinary authorities as a basis for disease-control decisions?

This is an important question that many farms may overlook when evaluating an investment.

In Vietnam, results from farm-based portable PCR should mainly be viewed as supporting information for screening and initial internal decision-making. For dangerous diseases or situations requiring official disease-control measures such as mandatory isolation, culling, disease declaration, or regulatory reporting, farms need to follow the instructions of the competent authority and send samples to an accredited or designated laboratory when required.

When portable PCR results show a positive result for a dangerous disease, farms should simultaneously:

• Isolate the suspected area
• Temporarily stop animal movement if there is a risk of pathogen spread
• Report to the local veterinary authority
• Coordinate sample collection and confirmation testing according to guidance
• Avoid unauthorized culling, rushed selling, or moving animals without guidance from the competent authority

Farms should contact the local livestock and veterinary management authority or the Department of Livestock Production & Animal Health to confirm current legal requirements before using portable PCR results for important decisions.

Common mistakes when using portable PCR on farms and how to fix them

Errors caused by sampling from the wrong site or improper storage

This is the most common error group and has the greatest impact on results. If the wrong sample type is collected, the sample is taken too early, the sample volume is too small, or the sample is damaged due to improper storage, false negatives may occur.

How to fix it:

• Build separate sampling SOPs for each disease.
• Place visual sampling instructions in the working area.
• Always record the date, time, sample type, sampling location, and sample collector.
• Follow the kit or veterinary authority’s sample-storage instructions.
• Do not use one storage procedure for every sample type.

Errors caused by sample cross-contamination in barn conditions

Barn environments contain dust, feces, secretions, and many sources of biological contamination. If handling is not careful, a negative sample may be contaminated with genetic material from a positive sample or from the environment.

How to fix it:

• Change gloves between animals or sample groups.
• Use separate sampling tools.
• Do not open multiple sample tubes at the same time.
• Separate the sampling area, sample-processing area, and PCR running area.
• Decontaminate working surfaces after each testing session.
• Use appropriate controls if required by the workflow.

Errors caused by expired kits or incorrect kit storage

PCR kits have expiry dates and specific storage requirements. Some kits need refrigerated or frozen storage, while others may be stored at different temperatures depending on the manufacturer. Expired or incorrectly stored kits can produce unreliable results without necessarily showing an obvious error.

How to fix it:

• Check the expiry date before each testing session.
• Record kit storage temperature.
• Do not use kits that have been thawed repeatedly if the manufacturer does not allow it.
• Do not use kits with torn, damp, discolored, or damaged packaging.
• Maintain an inventory log for kits and consumables.

Errors caused by interpreting results outside the clinical context

PCR detects the genetic material of a pathogen, but test results need to be interpreted together with symptoms, herd history, sampling time, epidemiological situation, and sampling procedures.

A negative result does not always completely rule out disease if the sample was taken too early or from the wrong site. A positive result also needs to be evaluated carefully if the Ct value is high, the sample has a risk of cross-contamination, or the disease belongs to a group that requires official confirmation.

How to fix it:

• Do not interpret PCR results separately from symptoms.
• Have a veterinarian or qualified professional support result interpretation.
• Retest or send samples to a laboratory for confirmation when results do not match the real situation.
• Keep complete records for traceability.

Limitations of portable PCR that farms need to know before investing

Portable PCR is not a universal solution. This device group has great value for rapid screening, but it still has important limitations:

• It does not completely replace clinical diagnosis.
• It does not replace official laboratories for legal decisions.
• It cannot detect pathogens outside the kit’s target list.
• It cannot distinguish virus strains if the kit does not support this function.
• It does not perform genetic sequencing.
• Results may be inaccurate if sampling, storage, or operation is incorrect.
• Kit cost per sample can be high.
• It is not suitable for farms without stable technical personnel.
• It requires long-term kit supply, maintenance, and technical support.

Before investing, farms should view portable PCR as part of a disease monitoring system, not as a standalone solution.

FAQ about PCR on livestock farms

Is portable PCR as accurate as laboratory testing, or does it still need laboratory confirmation?

Fully validated devices and kits can achieve high accuracy under proper operating conditions. However, in field settings, results are still affected by sample quality, operator handling, storage conditions, and cross-contamination risk.

For dangerous diseases or decisions with major legal or economic value, results from portable PCR should be confirmed by an accredited or designated laboratory according to the guidance of veterinary authorities.

Should a small farm with fewer than 500 pigs buy a PCR device or use an on-site service?

At this scale, buying a device is usually difficult to justify economically if it is used only internally and testing frequency is low. Using a mobile PCR service or sending samples to a laboratory is often more economically suitable.

However, if the farm is located far from a laboratory, has a high-value breeding herd, or faces major disease risk, it can consider using an on-site service first to evaluate effectiveness before investing in its own device.

How long does it take farm technical staff to operate portable PCR confidently?

With closed cartridge-based systems, people with a basic technical background can learn the operating steps in a short time if they receive direct training. However, stable operation, cross-contamination prevention, and proper handling of suspected results require additional supervised practice.

With open-platform systems, training usually takes longer because operators need to understand extraction, reaction preparation, cross-contamination control, and result interpretation.

Can portable PCR distinguish different virus strains within the same disease?

Most portable PCR kits mainly detect the presence of a pathogen or a specific genetic target group. Some kits may support genotype or broad virus-group differentiation, but not every device has this capability.

To identify strains, variants, or infection sources in greater depth, genetic sequencing at a specialized laboratory is usually required.

How much does a portable PCR test kit currently cost per run?

Kit cost depends on the disease being tested, manufacturer, sample type, purchase quantity, and distribution policy. Some kits may cost much more than sending samples to a laboratory when testing large volumes.

Livestock producers should treat kit cost as part of the overall cost calculation, including machine price, sampling supplies, labor, maintenance, calibration, training, and laboratory confirmation costs when needed.

Can portable PCR be used for every disease?

No. Portable PCR can only detect pathogens that have a suitable kit/assay. If a farm suspects a new, unusual disease, or a disease without a suitable supported kit/assay, it should contact a veterinarian or veterinary authority for guidance on sampling and sending samples to an appropriate laboratory.

On-site PCR services and what to consider when choosing a provider

When should farms choose a mobile PCR service instead of investing in their own device?

Mobile PCR services are suitable when:

• The farm does not need testing frequently.
• The farm does not yet have trained technical personnel.
• The farm is still evaluating the technology before making a long-term investment.
• The farm needs a rapid response in a suspected outbreak but does not have its own device.
• The farm wants to avoid maintenance, calibration, and kit-management costs.

The advantage of a mobile service is that farms do not need large upfront investment and do not have to take full responsibility for operating the device. The disadvantages are dependence on the provider’s schedule, potentially higher cost per use if used frequently, and the legal value of the report still needs to be confirmed.

Process for booking an on-farm PCR testing service and what to check

Usually, the farm contacts the service provider to book a schedule, describes the suspected situation, animal type, expected number of samples, and sampling location. The technical team may come to the farm, coordinate sample collection, run testing on site or near the farm, and return results within the same working session depending on the workflow.

Before signing a contract or using the service, farms should check:

• What device and kit does the provider use?
• Is the kit suitable for the suspected disease?
• Are the sampling and machine operators trained?
• What value does the result report have: internal screening only, or can it be used for official documentation or official procedures?
• If the result is positive, does the provider support sending confirmation samples to an accredited laboratory?
• Is there a veterinarian or expert to support result interpretation?
• Does the cost include sampling, supplies, travel, and reporting?
• When does the result turnaround time start: at booking, arrival at the farm, sample collection, or machine run?

These questions help farms avoid confusion between a “rapid testing service” and an “official result recognized by a competent authority.”

On-site PCR is a supporting tool, not a complete replacement for laboratories

On-site PCR is not a technology that completely replaces laboratories. Its greatest value is helping farms obtain information more quickly in the early stage of a suspected outbreak, allowing them to isolate, monitor, notify veterinarians, and send confirmation samples in time.

The choice between investing in a device, using a mobile service, or sending samples to a laboratory depends on herd or flock size, geographic location, testing frequency, disease risk level, technical resources, and the legal requirements of each farm.

Before making an investment decision, livestock producers should consult a veterinarian, ask suppliers for specific evaluation data, and contact the local livestock and veterinary management authority to understand current legal requirements.

Explore Livestock Diagnostic Equipment and Testing Technologies at VIETSTOCK 2026

VIETSTOCK 2026 – Vietnam’s Premier International Feed, Livestock & Meat Industry Show – is expected to bring together more than 300 brands and 13,000 trade visitors from many countries, including providers of diagnostic equipment, testing technologies, and herd health management solutions. This is an opportunity to:

• Gain direct access to modern diagnostic and testing equipment used in livestock disease management in Vietnam and across the region.
• Compare and evaluate multiple testing solutions from different providers in one place before making an investment decision.
• Speak with veterinary experts and equipment suppliers about real-world costs, operating requirements, and implementation roadmaps suitable for different farm scales.

Time: October 21–23, 2026

Venue: Saigon Exhibition and Convention Center (SECC), 799 Nguyen Van Linh, Ho Chi Minh City.

Register now to seize opportunities for business growth and networking in the livestock industry.

Visitor registration: https://www.vietstock.org/en/online-registration-2/

Event website: https://www.vietstock.org/en/

Contact information:

• Exhibiting: Ms. Sophie Nguyen – [email protected]
• Group Delegation Support: Ms. Phuong – [email protected]
• Marcom Support: Ms. Anita Pham – [email protected]