competitive binding assays revealed a high specificity for progesterone : r5020 greater than or equal to progesterone greater than deoxycorticosterone greater than 5 alpha-pregnane-3,20-dione much greater than 17 alpha-hydroxyprogesterone greater than or equal to 20 alpha-dihydroprogesterone greater than or equal to testosterone greater than or equal to estradiol greater than cortisol .
C0033308
progesterone
C0012311
20 alpha-dihydroprogesterone