Plasma levels of progesterone after vaginal, rectal or intramuscular administration of progesterone.

Authors: Nillius SJ, Johansson ED.

Publication Year: 1971

Citation: Am J Obstet Gynecol 1971;110(4):470-7.

Plasma levels of progesterone equivalent to normal luteal phase levels were obtained using 25 mg of injected progesterone or 100 mg via rectal or vaginal administration at 8 hours after administration.