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The significance of elevated FSH for reproductive function
Bailliere'S Clinical Obstetrics and Gynaecology
|June 1, 1993
Summary
Basal follicle-stimulating hormone (FSH) and estradiol (E2) levels, along with age, are key indicators for predicting ovarian reserve and success in assisted reproduction. Optimal prediction combines age, FSH, luteinizing hormone (LH), and E2 levels.
Area of Science:
- Reproductive Endocrinology
- Infertility Diagnostics
- Assisted Reproductive Technology (ART)
Background:
- Assessing ovarian reserve is crucial for predicting fertility outcomes in women undergoing assisted reproduction.
- Hormonal profiles and age are recognized factors influencing the success of ovarian stimulation and pregnancy.
- Existing methods for evaluating ovarian reserve vary in complexity and predictive accuracy.
Purpose of the Study:
- To evaluate the predictive value of basal follicle-stimulating hormone (FSH) and estradiol (E2) levels for ovarian reserve and assisted reproduction outcomes.
- To determine the optimal combination of factors, including age and other hormones like luteinizing hormone (LH), for predicting pregnancy success.
- To explore the utility of basal hormone levels in identifying unexplained infertility.
Main Methods:
- Analysis of basal FSH and E2 levels in women undergoing assisted reproduction.
- Correlation of hormone levels and age with ovarian stimulation response and pregnancy rates.
- Comparison of static basal hormone tests with dynamic provocative tests for ovarian reserve assessment.
Main Results:
- Women aged 40+ with favorable hormone profiles can achieve success in assisted reproduction.
- Basal FSH levels > 20 IU/L indicate poor response to ovarian stimulation; levels > 25 IU/L rarely result in ongoing pregnancy.
- Optimal pregnancy chances are associated with FSH levels between 10-20 IU/L, and basal E2 > 50 pg/mL predicts poor ovarian reserve. Age remains a significant factor. Simultaneous assessment of age, FSH, LH, and E2 offers optimal prediction.
Conclusions:
- Basal FSH and E2 levels, in conjunction with age, are significant predictors of ovarian reserve and assisted reproduction success.
- Elevated basal FSH and E2 levels are indicative of poor ovarian reserve and reduced pregnancy potential.
- Comprehensive assessment including age and multiple hormone levels (FSH, LH, E2) enhances predictive accuracy for fertility treatments and may help diagnose unexplained infertility.