Levels of progesterone on day 21 of the cycle that are too low can indicate that ovulation (egg release from the ovary) has not taken place as expected. Without ovulation, a pregnancy cannot occur.
Read the full article on: Female hormone analysis: what should normal hormone levels be? ( 78).
Andrea Rodrigo
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.
