to see if saliva is a valid substitute for plasma in assay of progesterone even when concentrations of hormone and binding proteins are fluctuating , we determined the concentrations of total and free progesterone in plasma and salivary progesterone in specimens from 36 women volunteers during the course of pregnancy and six weeks postpartum , using a highly specific ria for total progesterone after extraction and chromatographic purification of the steroid .
C0033308
progesterone
C0032961
women