Labelled Pregnanediol 3α-O-β-D-Glucuronide, the glucuronide conjugate of Pregnanediol (P705130). Levels of Pregnanediol 3α-O-β-D-Glucuronide can be used to monitor the reproductive status of dairy cows. 3α-O-β-D-Glucuronide can be used (as an alternative to creatine) as a reference to adjust other hormonal markers in study of urinary hormonal profiles in the human menstrual cycle.