Clinical Review

How ovarian reserve testing can (and cannot) address your patients’ fertility concerns

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#5 My patient is not ready to be pregnant. If her results are abnormal, should she freeze eggs?

For patients who might be interested in seeking fertility preservation and ART, earlier referral to a reproductive specialist to discuss risks and benefits of oocyte or embryo cryopreservation is always preferable. The younger a woman is when she undergoes fertility preservation, the better. Among patients planning to delay conception, each one’s decision is driven by her personal calculations of the cost, risk, and benefit of egg or embryo freezing—a picture of which ovarian reserve testing is only one piece.

#6 Can these tests predict menopause?

Menopause is a clinical diagnosis, defined as 12 months without menses (without hormone use or other causes of amenorrhea). In such women, FSH levels are elevated, but biochemical tests are not part of the menopause diagnosis.36 In the years leading to menopause, FSH levels are highly variable and unreliable in predicting time to menopause.

AMH has been shown to correlate with time to menopause. (Once the AMH level becomes undetectable, menopause occurs in a mean of 6 years.37,38) Patients do not typically have serial AMH measurements, however, so it is not usually known when the hormone became undetectable. Therefore, AMH is not a useful test for predicting time to menopause.

Premature ovarian insufficiency (loss of ovarian function in women younger than age 40), should be considered in women with secondary amenorrhea of 4 months or longer. The diagnosis requires confirmatory laboratory assessment,36 and findings include an FSH level greater than 25 mIU/mL on 2 tests performed at least 1 month apart.39,40

Ovarian reserve tests: A partial view of reproductive potential

The answers we have provided highlight several key concepts and conclusions that should guide clinical practice and decisions made by patients:

  1. Ovarian reserve tests best serve to predict ovarian response during IVF; to a far lesser extent, they might predict birth outcomes from IVF. These tests have not, however, been shown to predict spontaneous pregnancy.
  2. Ovarian reserve tests should be administered purposefully, with counseling beforehand regarding their limitations.
  3. Abnormal ovarian reserve test results do not necessitate ART; however, they may prompt a patient to accelerate her reproductive timeline and consult with a reproductive endocrinologist to consider her age and health-related risks of infertility or pregnancy loss.
  4. Patients should be counseled that, regardless of the results of ovarian reserve testing, attempting conception or pursuing fertility preservation at a younger age (in particular, at <35 years of age) is associated with better outcomes.

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