title: Significance of 17alpha OH progesterone assay in the evaluation of ovarian and adrenal function.
abstract: Plasma 17alpha OH progesterone was assayed radioimmunologically, using an anti-17-OH-progesterone BSA antiserum as specific binding antigen. The method consisted in extracting steroids with ethyl ether from 1 ml plasm (to which 17alpha OH progesterone-1,2-3H had been added for the assessment of losses); the extract was then submitted to chromatography on a Sephadex LH-20 column, antiserum was added and the free steroid was separated from the bound form by Charcoal-dextran. Average recovery of 17alpha OH progesterone-1,2-3H was 75+/-5%. Minimum sensitivity of the method oscillated about 7-10 pg. MIF (Method Interfering Factors) were evaluated. The method was used for the assay of 17alpha OH progesterone plasma levels during normal menstrual cycles, in women undergoing ovarian stimulation with HMG and HCG in the follicular and luteal phase respectively. Finally, changes of plasma 17alpha OH progesterone levels were assessed during adrenal stimulation and suppression in various stages of the menstrual cycle.
mesh_terms: D000304:Adrenal Cortex Function Tests; D000324:Adrenocorticotropic Hormone; D000328:Adult; D001623:Betamethasone; D006063:Chorionic Gonadotropin; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D006908:Hydroxyprogesterones / Q000097:blood*; D008596:Menotropins; D008598:Menstruation; D010050:Ovarian Function Tests; D010060:Ovulation; D010912:Pituitary-Adrenal Function Tests
chemical_list: D006063:Chorionic Gonadotropin; D006908:Hydroxyprogesterones; D008596:Menotropins; D000324:Adrenocorticotropic Hormone; D001623:Betamethasone