Pregnancy Test

BioPryn, a blood pregnancy test for cattle, is available from BioTracking, LLC. The Moscow, Idaho-based firm manufactures the test, which uses an enzyme-linked immunosorbent assay (ELISA) to evaluate bovine blood samples for pregnancy. The company says the test is fast, accurate, safe for the embryo and can detect pregnancy very early in gestation. The test evaluates blood samples for the presence of a protein called pregnancy specific protein B (PSPB), of which the placenta is the only source. BioPryn can detect PSPB in blood from heifers as early as 28 days after insemination. Pregnancy can be diagnosed in lactating cows 30 days after breeding. Cows must be at least 90 days in milk to ensure that the PSPB from the previous calf is eliminated from the bloodstream. The test takes 27 hours to process once samples are set up in the laboratory. The test carries a 97 percent overall accuracy rate. Ag Health Laboratories, Sunnyside, Wash., is the first veterinary lab in the United States to offer BioPryn testing to dairies.

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