6 Best Fecal Sample Containers For Veterinary Lab Drop-Offs

Keeping a parasite-free herd is one of the most tedious yet critical responsibilities on a small farm. When the vet requests a fecal sample for an egg count, having the right container can turn a messy chore into a quick, sterile task. Selecting the appropriate vessel ensures that lab results are accurate and the risk of cross-contamination remains low.

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Sarstedt Fecal Tube with Spoon: Best for Easy Use

The Sarstedt fecal tube is a staple for a reason: it integrates a small, flattened spoon directly into the screw-cap lid. This design eliminates the need for external spatulas or tongue depressors, which often end up causing accidental spills during collection.

For the farmer working with nervous livestock or managing time-sensitive health checks, this efficiency is invaluable. The integrated spoon is sized perfectly for gathering the exact amount needed for a flotation test without creating unnecessary mess.

If simplicity and minimizing contact with biological material are the primary goals, this is the go-to choice. It functions as a single, self-contained unit that simplifies the entire process from barn to lab bench.

Dynarex Specimen Containers: Most Versatile Option

Dynarex containers offer a robust, general-purpose solution that handles everything from liquid samples to bulkier goat or sheep pellets. These are typically larger than specialized tubes, making them ideal when the veterinarian requires a larger volume for diagnostic testing.

Their durability means they survive being jostled in a truck bed or a muddy pockets during a barn check. Because they are cost-effective, they are excellent for farmers who need to keep a stockpile on hand for routine parasite management throughout the grazing season.

Consider these the workhorses of the collection world. They may lack fancy features, but for high-volume needs and general versatility, they provide the most reliable performance for the investment.

Para-Pak Vials: Best for Preserving Samples

Para-Pak vials are the industry standard when a sample cannot reach the lab immediately. These vials often come pre-filled with preservatives, such as formalin or PVA, which fix the eggs and larvae in place so they do not hatch or deteriorate during transit.

This is a specific choice for farmers located significant distances from the nearest veterinary clinic. Without a preservative, intestinal parasites can hatch, rendering the sample useless and leading to a false negative result.

Choose Para-Pak vials if the logistics of the farm necessitate a delay of more than 24 hours between collection and drop-off. They are a professional-grade safeguard against the inevitable delays of rural life.

Medpride Collection Cups: Best All-in-One Kit

Medpride often packages their collection cups in kits that include labels and sometimes protective bags. This is ideal for those who prefer to keep their collection supplies organized in a dedicated medical box or tackle kit near the barn.

The containers feature leak-resistant lids, which provide peace of mind when transporting samples from high-moisture environments. Their wide-mouth design also makes it exceptionally easy to collect samples directly from the ground or during grooming.

If the goal is to have a complete, ready-to-go system that reduces the stress of gathering supplies, Medpride kits are the smartest procurement. They bridge the gap between clinical requirements and the practical needs of the farm.

Fisherbrand Concentrators: Top Lab-Grade Choice

Fisherbrand concentrators represent the top tier of collection hardware, often used by professional animal husbandry clinics and research facilities. They are designed to facilitate the actual testing process by filtering debris out of the fecal matter.

While they may be overkill for a casual check, they are the best option for managing complex health issues in high-value livestock. They ensure that the technician receives a clean, concentrated sample that is far easier to analyze under a microscope.

For the serious breeder or farmer who demands precision diagnostics, these provide the clearest, most accurate results. Invest in these only if the laboratory specifically requests a prepared or concentrated sample format.

Ziploc Double Zipper Bags: For Fresh Samples Only

Double zipper bags are a common stopgap for hobby farmers, but they have distinct limitations. They are only suitable for immediate drop-off of fresh samples where the veterinarian performs the analysis within a few hours.

They lack the structural integrity of rigid plastic, meaning they are prone to being crushed or punctured if not placed inside a secondary hard-sided container. Furthermore, the plastic can sometimes interact with the sample, making it a poor choice for long-term storage.

Use these only when no other vessel is available and the lab is just down the road. Treat them as a temporary solution rather than a permanent storage method for critical animal health data.

How to Collect a Clean Sample from Any Animal

Cleanliness is paramount for accurate lab results. When collecting from sheep, goats, or cattle, target the freshest deposits, specifically from the top or middle of the pile, as these have had the least contact with soil-borne bacteria.

If an animal is restrained in a stanchion or crush, try to collect the sample directly as it passes to avoid floor contamination. Always use a clean, disposable tool for every animal to prevent cross-contamination between different pens or species.

Avoiding ground contact is the single most effective way to ensure a high-quality sample. If the sample touches the dirt, it is better to discard it and wait for a fresh deposit than to risk skewed data.

Labeling Your Sample Correctly for the Lab

A sample without clear identification is useless to a lab technician. Always use a waterproof marker to note the animal’s ID number, the date and time of collection, and the specific species on the side of the container.

Do not write on the lid, as lids can be swapped during processing or lost. Affixing a small piece of masking tape or using a dedicated label provides a surface that is less likely to smear or fade when exposed to condensation in a cooler.

Clear labeling prevents diagnostic errors. Ensure that the information provided to the lab matches the herd records exactly to streamline the treatment recommendations that follow.

Storing Samples: Refrigerate, Don’t Freeze

Refrigeration is the best way to pause the biological activity within a sample. Place the sealed container in a dedicated area of the refrigerator, ideally inside a secondary sealed bag or plastic container to maintain strict hygiene.

Never freeze a fecal sample, as the process of freezing and thawing ruptures the structure of the parasite eggs. This destruction makes them impossible to identify or count under a microscope, which effectively invalidates the test.

If the sample cannot be refrigerated, keep it in a cool, dark place out of direct sunlight. Temperature fluctuations will cause the sample to degrade rapidly, so keep the duration of transit as short as possible.

Common Sample Collection Mistakes to Avoid

The most frequent mistake is waiting too long; a sample that is more than 24 hours old is rarely worth testing. Heat is the enemy of diagnostic accuracy, as it encourages the rapid hatching of parasite eggs, which hides the true burden of the animal.

Another common error is collecting too little or too much material. A few grams—roughly the size of a large marble or a walnut—is typically sufficient for a standard fecal egg count.

Finally, do not rely on “old” samples saved from days prior just to save a trip to the vet. The investment in laboratory testing is wasted if the sample quality is compromised by poor storage or timing.

Taking the time to choose the right container and following proper collection hygiene will significantly improve the accuracy of the diagnostics received. Well-collected samples lead to precise treatment, which keeps the herd healthier and saves money on unnecessary dewormers. Stay organized and consistent with the process, and the farm will remain resilient against parasite pressure.