title: Saliva progesterone throughout the menstrual cycle and late pregnancy.
abstract: Whole saliva was collected daily by four women during one menstrual cycle and twice weekly by three women during their third trimester of pregnancy. Follicular-phase saliva progesterone concentrations, as measured by radioimmunoassay, generally remained below 50 pg/mL. However, progesterone rose to a peak of 400 +/- 107 pg/mL (mean +/- SE) between days 17 and 25, after which it declined to 143 +/- 67 pg/mL by one day prior to menses. The third trimester of pregnancy was characterized by steadily increasing concentrations of saliva progesterone until 1--3 weeks prior to parturition; concentrations following parturition were similar to those of the follicular phase.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008598:Menstruation; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011374:Progesterone / Q000378:metabolism*; D011863:Radioimmunoassay; D012463:Saliva / Q000378:metabolism*; D013997:Time Factors
chemical_list: D011374:Progesterone