All TVMDL locations will be closed on Monday, May 25 in observance 0f Memorial Day. Normal business hours will resume on Tuesday, May 26. Please schedule sample shipments with these hours in mind.
Measurement of estrone sulfate by radioimmunoassay.
For pregnancy detection in horses, estrone sulfate is most reliable after 60-90 days of gestation. However, concentrations may decrease a few weeks before parturition.