How early in a pregnancy can animals be tested with BioPRYN®?
A. Heifers and lactating cows can be tested at 30 days or later after breeding. Lactating cows have residual PSPB from the previous pregnancy until 90 days after calving. To be safe in not getting a false-positive result, breeders are cautioned to take the sample at 30 days or more after breeding, and 90 days or more after calving. Thus if a cow is bred at 60 days after calving, it is appropriate to take the 30 days post-breeding sample, which is 90 days after calving. If she is bred at 55 days after calving, then the post-breeding sample should be taken at 35 days so that the cow is 90 days post-calving. Animals that are detected open can then be immediately returned to aggressive breeding programs using Lutalyse®, OvSynch® and/or CIDRs®. Q. What is the accuracy of BioPRYN®? A. BioPRYN® has been shown to have an overall accuracy rate of 97 percent. In fact, the test is over 99 percent accurate if the cow is called not pregnant, with less than 1 percent showing false-open (false-negati
