The calculation of progesterone to estrogen ratio, also known as Pg/E2 or P/E2 ratio, is an essential part of female hormone balance assessment and success prediction of in vitro fertilization (IVF).
You can also use this calculator for estradiol and progesterone unit conversion by simply clicking on units to switch between ng/mL, pg/mL, and nmol/L for progesterone and pg/mL, ng/mL, and pmol/L for estradiol.
Estradiol (E2) belongs to estrogens, a group of female sex hormones. Other major estrogens are: estrone (E1) and estriol (E3). Because estradiol is the most potent and most frequently measured, its concentration is used in the progesterone to estradiol ratio estimation.