Day 21: Progesterone is low in the first half of the cycle. That is why it is not used for fertility testing on cycle day 7. A Progesterone level is drawn in the middle of the luteal phase (second half) of the menstrual cycle to determine if ovulation occurred
Answered 6/30/2014
4k views
A doctor has provided 1 answer
5 doctors weighed in across 2 answers
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question