What is the normal range of the pg/e2 ratio during the luteal phase (ideally 20th or 21st day of the cycle)? thank you.

Hard number to find: But a website called Rocky Mountain Analytical Lab had this to say: 95% of regularly cycling women not on hormones have a Pg to E2 ratio of between 23 and 57 (sampled one week prior to onset of menses). Unfortunately, because of the variability in absorption from person to person, the Pg to E2 ratio is not useful when women are on topical progesterone and/or estrogen.