Equine Progesterone (Early Indicative Pregnancy Test)

Quantitative progesterone is measured in a serum sample taken 18 – 25 days post service. Progesterone levels >13.0 nmol/L are highly suggestive of pregnancy at this time, levels <3.0 nmnol/L are likely to be non-pregnant. This is very useful for thoroughbred mares, where time is critical and who need to be returned to the stallion for further mating. Progesterone can also be used in other ruminants that cycle every 21 days. Note: Bovine samples for progesterone must be taken as clotted blood and separated as soon as possible. Heparinised bovine blood samples will have falsely low progesterone levels due to the red blood cells metabolising the progesterone.