a 17-hydroxyprogesterone value of 1.0 ng/ml , or more , was seen for the first time in the cycle on the day of the lh peak in 13 cycles and a progesterone + 17-hydroxyprogesterone level of at least 1.8 ng/ml in 14 of the 15 cycles studies .
C0033308
progesterone
C0020387
hydroxyprogesterone