a simple method is described for the simultaneous radioligand assay of four delta5-3beta-hydroxysteroids adjacent to one another on the biosynthetic pathway ( pregnenolone [ 1 ] , 17alpha-hydroxypregnenolone , dehydroepiandrosterone and 5-androsterone-3beta , 17beta-diol ) , and their four delta4-3keto products ( progesterone , 17alpha-hydroxyprogesterone , 4-androstene-3 , 17-dione and testosterone ) .
C0033308
progesterone
C0020387
17alpha-hydroxyprogesterone