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Updated: Aug 13, 2026
08:46
Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Summary
Clomiphene citrate (Clomid) treatment can stimulate ovulation by increasing follicle-stimulating hormone (FSH) and luteinizing hormone (LH) levels. However, inadequate or excessive estrogen levels may prevent ovulation despite an LH surge.
Area of Science:
- Reproductive Endocrinology
- Pharmacology
Background:
- Clomiphene citrate (Clomid) is a widely used medication for ovulation induction.
- Understanding the hormonal dynamics during Clomid treatment is crucial for optimizing its efficacy.
Purpose of the Study:
- To investigate the daily hormonal profiles (FSH, LH, estrogens, progesterone, androgens) during clomiphene citrate treatment.
- To correlate hormonal changes with ovulation and conception rates.
Main Methods:
- Daily plasma samples were collected from six patients undergoing clomiphene citrate therapy.
- Hormone levels including FSH, LH, estrone (E1), estradiol-17beta (E2), progesterone (P), androstenedione (A), and testosterone (T) were measured.
Main Results:
- Clomiphene citrate increased LH and FSH levels, peaking between days 5-7.
- Rising E1 and E2 levels reflected follicular maturation, with a critical E2 level triggering an LH surge.
- Ovulation occurred in 3/6 patients, with 1 conception; 3 patients failed to ovulate despite ovarian response.
- Elevated E2 or androgen levels may inhibit ovulation in some cases.
Conclusions:
- Clomiphene citrate effectively modulates gonadotropin and estrogen levels to induce ovulation.
- Optimal estrogen levels are critical for successful ovulation induction.
- Further research is needed to understand the role of androgens in clomiphene-induced cycles.
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