in all blood samples the levels of immunoreactive lutropin ( lh ) , estradiol ( e2 ) , 17-hydroxyprogesterone ( 17-ho-p ) , progesterone ( p ) and 20 alpha-dihydroprogesterone ( 20 alpha-ho-p ) were estimated by radioimmunoassay .
C0020387
17-hydroxyprogesterone
C0033308
progesterone