Ovarian Reserve Blood Test Panel

Ovarian reserve refers to the size of the remaining egg pool. It declines with age in everyone, at a pace that varies considerably from person to person, and these three markers are the standard way to assess it.

AMH (anti-Müllerian hormone) is produced by small developing follicles and reflects the size of that pool. It is relatively stable across the menstrual cycle, so it can be drawn on any day.

FSH is the pituitary signal telling the ovaries to recruit a follicle. As reserve falls, the pituitary compensates by pushing harder, so a rising early-cycle FSH suggests the ovaries are becoming less responsive.

Estradiol is measured alongside FSH because it provides the context. An early rise in estradiol can suppress FSH into the normal range and mask a reduced reserve, so an FSH result is difficult to interpret without it.

What these tests can tell you is how your reserve compares with others your age, which is genuinely useful when planning — considering egg freezing, deciding on timing, or preparing for fertility treatment, where these values help predict response to ovarian stimulation.

What they cannot tell you is whether or when you will conceive naturally. In people who are not otherwise experiencing infertility, a single AMH measurement does not reliably predict time to pregnancy. A low result is not a diagnosis of infertility, and a reassuring one is not a guarantee.