InstalabFertility and Ovarian Reserve Panel
Should you take a Fertility and Ovarian Reserve Panel test?
This test is most useful if any of these apply to you.
6 Biomarkers Included
- AMHAnti-Müllerian hormone (AMH), made by small growing follicles, is the clearest single signal of how many eggs remain and how strongly your ovaries would respond to fertility medication.A low result suggests a smaller egg supply, though it does not measure egg quality or your chance of conceiving naturally.
- FSHFollicle-stimulating hormone (FSH) drives follicle growth; when the ovaries hold fewer follicles, the pituitary pushes harder and FSH rises, making it a feedback check on reserve.A high early-cycle FSH points toward diminished reserve, especially when AMH is also low.
- LHLuteinizing hormone (LH) triggers ovulation; its balance against FSH helps separate polycystic ovary syndrome from egg-supply problems that cause similar cycle issues.A high LH relative to FSH alongside high AMH supports a PCOS pattern rather than low reserve, but does not diagnose it alone.
- EstradiolEstradiol tracks active follicle growth and estrogen output; measured early in the cycle, it shows whether an FSH reading can be trusted or is being artificially masked.An elevated early-cycle estradiol can hide a high FSH, so the two are always read together.
- ProlactinProlactin, a pituitary hormone, can suppress ovulation when elevated; including it catches a common and treatable cause of missed periods and subfertility.A high prolactin suggests a pituitary-driven cause of missed ovulation worth investigating further.
- TSHThyroid-stimulating hormone (TSH) checks thyroid function, because an underactive thyroid can disrupt ovulation and mimic a reproductive problem that is actually reversible.An abnormal TSH flags a treatable thyroid cause of irregular cycles or trouble conceiving.
About Fertility and Ovarian Reserve Panel
If you are thinking about children now or in a few years, one question sits underneath everything: how much time and how many eggs do your ovaries still have. This panel gives you the closest read available on that supply, plus a check on the hormone signals that decide whether you ovulate each month.
It combines six hormones drawn at once. Together they separate three very different things: how many eggs remain, whether your brain and ovaries are talking to each other normally, and whether a treatable thyroid or pituitary issue is quietly disrupting your cycle.
What This Panel Reveals
The first theme is egg supply. Anti-Müllerian hormone (AMH), made by the small growing follicles in your ovaries, is the single clearest marker of how large that recruitable pool is. It tends to fall years before other markers shift, which makes it an early signal of a shrinking reserve. It reflects egg quantity, not egg quality or your odds of conceiving in any given month.
The second theme is the feedback loop between your pituitary gland and ovaries. Follicle-stimulating hormone (FSH) pushes follicles to grow, and estradiol is the estrogen those follicles produce. When the ovaries have fewer follicles, the pituitary pushes harder and FSH climbs. Reading FSH and estradiol together, early in the cycle, shows whether that feedback system is straining.
The third theme is everything outside the ovary that can still stop ovulation. Luteinizing hormone (LH) triggers egg release and, weighed against FSH, supports a diagnosis of polycystic ovary syndrome (PCOS), a common hormonal condition, though the LH-to-FSH ratio is a supportive clue rather than a formal diagnostic criterion. Thyroid-stimulating hormone (TSH) and prolactin extend the picture beyond the ovaries: an underactive thyroid or a high prolactin can shut down ovulation while the eggs themselves are fine. That distinction matters, because those causes are often reversible.
How to Read Your Results Together
The value here is the pattern, not any single number. The same AMH value can mean opposite things depending on what the other five hormones show. A few combinations do most of the interpretive work.
| Pattern | What It Suggests |
|---|---|
| Low AMH, higher FSH, normal TSH and prolactin | Diminished ovarian reserve. The egg pool looks smaller and the feedback loop is straining. |
| High AMH, higher LH relative to FSH, irregular cycles | A pattern consistent with PCOS rather than a low egg supply, even though both can cause cycle problems. |
| Low or normal AMH with abnormal TSH or high prolactin | A thyroid or pituitary cause may be suppressing ovulation. Often treatable without touching the ovaries. |
| Low FSH and low estradiol together | Points upstream, toward the brain's signaling, rather than to primary ovarian failure. |
AMH is a well-established ovarian reserve marker, but its assays are not yet standardized across labs, so treat these as directional signals, not verdicts. Values differ between labs, and one AMH result can reclassify a woman between normal and low responder in a substantial minority of cases, roughly 30 to 40 percent, when repeated, so a striking result deserves a second look.
What to Do with Your Results
If AMH is low or FSH is high, the productive next step is a reproductive endocrinologist and an antral follicle count, an ultrasound that counts visible follicles and corroborates the blood work. If the pattern points to PCOS, adding androgen testing sharpens it. If TSH or prolactin is abnormal, that becomes the first thing to correct, since fixing it can restore normal cycles.
For timing, FSH and estradiol are most meaningful when drawn on roughly day two to four of your cycle, while AMH can be drawn on any day. Serial tracking matters most if you are watching reserve over time or protecting fertility before a medical treatment. In that case, retesting every 6 to 12 months shows the direction of change, which is more useful than a single snapshot.
When Results Can Be Misleading
A few factors bend several markers at once. Hormonal birth control can lower both AMH and FSH, understating your true reserve. A higher body weight is linked to lower AMH, though whether that reflects a genuinely smaller egg supply or partly a measurement effect is still debated. And estradiol that has already begun rising later in the cycle can mask an elevated FSH, which is why cycle timing is worth getting right before you read the whole panel.