Serum Levels of FSH, LH, Estradiol-17β and Progesterone following the Administration of a Combined Oral Contraceptive Containing 20 μg Ethinylestradiol
- 1 January 1978
- journal article
- research article
- Published by S. Karger AG in Gynecologic and Obstetric Investigation
- Vol. 9 (6) , 304-311
- https://doi.org/10.1159/000300999
Abstract
An oral contraceptive containing 20 µg of ethinylestradiol and 250 µg of levonorgestrel was given to 5 normally menstruating women for two consecutive cycles. Peripheral serum levels of FSH, LH, estradiol-170 and progesterone were determined during the treatment period and during two control cycles, one immediately before, and one immediately after treatment. In all 5 women studied there were no LH peaks and no luteal phase levels of progesterone during the treatment cycles indicating complete inhibition of ovulation. 4 of the 5 women showed no biphasic estradiol pattern. Posttreatment control cycles showed reestablished ovulatory pattern in 4 of the 5 subjects.Keywords
This publication has 2 references indexed in Scilit:
- Low-Dose Combination Oral Contraceptives: A Controlled Clinical Study of Three Different Norgestrel-Ethinyl Estradiol RatiosFertility and Sterility, 1977
- Studies on Low-Dose Oral Contraceptives: Cervical Mucus and Plasma Hormone Changes in Relation to Circulating D-Norgestrel and 17α-Ethynyl Estradiol ConcentrationsFertility and Sterility, 1976