When it comes to managing reproductive efficiency in livestock, early and accurate pregnancy detection is essential. The BioPRYN® Pregnostx on-site pregnancy test is a field-proven tool that allows producers to confidently check pregnancy status in cattle, sheep, and goats—right in the barn or chute.
What Is the BioPRYN Pregnostx Test?
The BioPRYN Pregnostx test is a rapid blood-based pregnancy test that detects Pregnancy-Specific Protein B (PSPB), a biomarker produced by the placenta and present in the blood of pregnant animals. Unlike rectal palpation or ultrasound, this test requires minimal restraint and no specialized training, making it an excellent solution for producers who want fast, consistent results without stress on the animal.
How It Works
- Draw Blood: Collect a small blood sample from the animal’s jugular or tail vein using a vacutainer.
- Apply Sample: Use a pipette to place a few drops of whole blood or serum into the sample well of the test cassette. Follow with 3 drops of the diluent included with the test.
- Wait for Results: Within 15 to 20 minutes, the results will appear clearly in the test window.
The cassette features two lines:
- C Line (Control): Confirms the test is working.
- T Line (Test): Presence indicates a positive pregnancy result.
Interpreting Results
- Two Clear Lines (C + T) = Pregnant
- One Line (C only) = Open (Not Pregnant)
- No Lines or T Line Only = Invalid Test
Note from Experience: In our embryo transfer program, we’ve found that a barely visible or extremely faint test line (T line) often correlates with an open recipient. While the presence of any T line technically indicates a positive result, in practice—especially with ET recipients—a strong visible T line appears to be a more reliable indicator of pregnancy.
Key Benefits
- On-Farm Use: No need to ship samples or wait days for lab results.
- Quick Turnaround: Results in under 20 minutes.
- Non-Invasive: Reduces stress and risk to both animal and handler.
- Highly Accurate: Reliable as early as 28 days post-breeding in cattle, and 30 days post-breeding in sheep and goats.
- Cost-Effective: Avoids the need for expensive equipment or vet calls for routine checks.
Real-World Performance
As seen in the image above, a group of test cassettes from BioTracking show the distinct clarity of results. Whether you’re running a large cow-calf operation or a small goat farm, the BioPRYN Pregnostx test puts fast, reliable pregnancy detection in your hands.
Conclusion
The BioPRYN Pregnostx on-site pregnancy test is a practical and powerful tool for managing livestock reproduction. It’s especially useful in embryo transfer programs, where rapid, early detection can help guide decision-making. With its ease of use, speed, and field-ready accuracy, it’s a trusted option for producers looking to take control of their herd’s reproductive performance.
Note: I would recommend following the exact manufacturers instructions rather than the instructions I state here as they are bound to change over time or with different batches.
