Fertility · Diagnostics
AMH Test Explained: What the Number Actually Means
Anti-Müllerian Hormone (AMH) is the single most useful blood marker of ovarian reserve. It does not predict whether you can conceive naturally — it predicts how many eggs are left and how an IVF cycle is likely to respond. Here's how to read your number without panic.
What AMH actually measures
Anti-Müllerian Hormone is a glycoprotein secreted by granulosa cells surrounding your pre-antral and small antral follicles (roughly 2–8 mm in size). Because those small follicles are the recruitable pool from which each month's cohort is drawn, AMH blood levels correlate tightly with the total number of remaining follicles — your ovarian reserve. Unlike FSH, which spikes and dips across the cycle, AMH is remarkably stable, which is why you can draw it any day of any cycle.
Important: AMH tells you about quantity, not quality. A 42-year-old with an AMH of 3.0 has more eggs than most peers, but those eggs still carry the aneuploidy risk of a 42-year-old. Conversely, a 32-year-old with an AMH of 0.6 has diminished reserve but her eggs likely still have age-appropriate quality.
Age-adjusted reference ranges
Never interpret AMH against a generic "normal." The number has to be read against your age:
- Age 25–29: 3.0–7.0 ng/mL typical, > 1.5 reassuring
- Age 30–34: 2.0–6.8, > 1.2 reassuring
- Age 35–37: 1.5–4.0, > 1.0 reassuring
- Age 38–40: 1.0–3.0, > 0.7 reassuring
- Age 41–42: 0.5–2.5, > 0.5 reassuring
- Age 43+: often < 1.0 even in fertile women
Values below the age band suggest "diminished ovarian reserve" (DOR) — a signal to act sooner, not a sentence.
What AMH predicts — and what it does not
AMH predicts well:
- IVF response — how many eggs you're likely to retrieve at stimulation.
- Age at menopause (loose correlation — a very low AMH in your 30s suggests earlier menopause).
- Risk of a poor stimulation cycle or cycle cancellation.
- PCOS phenotype at the high end (AMH > 5 in a woman under 35 with irregular cycles).
AMH does NOT predict:
- Whether you can conceive naturally this cycle. Many women with AMH < 0.5 conceive spontaneously.
- Embryo quality or miscarriage risk (that is driven by age, not reserve).
- Time-to-pregnancy for natural conception (Steiner 2017, JAMA — landmark finding).
Common testing pitfalls
- Hormonal contraception falsely suppresses AMH by roughly 20–40%. If you're on the pill, patch, ring, or hormonal IUD, expect the number to under-represent your reserve. Recheck 3 months after stopping for an accurate read.
- Vitamin D deficiency may modestly suppress AMH — worth checking alongside.
- Assay variability is real. If a number seems out of step with your age or symptoms, repeat once with the same lab.
- PCOS elevates AMH (often 5–15 ng/mL) — this is a diagnostic feature, not "good reserve."
Can you improve AMH?
No supplement, diet, or lifestyle change reliably raises AMH, because AMH reflects a follicle count that is set at birth and declines monotonically. What you can improve is the quality of the eggs within that pool — and quality is what drives live-birth outcomes far more than raw reserve. That's why the standard evidence-based response to a low AMH is a 90-day egg-quality protocol (CoQ10/ubiquinol, myo-inositol, ALA, omega-3, vitamin D), not chasing the number itself.
If your AMH is low for your age
Steps, in order:
- Confirm with a repeat draw off any hormonal contraception.
- Order antral follicle count (AFC) via transvaginal ultrasound for a two-source view of reserve.
- Start a 90-day CoQ10-based egg-quality protocol.
- Book a fertility consult to plan the timeline and decide whether REI referral is warranted now vs after a 3–6 month natural try.
If your AMH is high (> 5 ng/mL)
Consider a PCOS workup: cycle history, androgen labs (total T, DHEA-S, 17-OHP), fasting insulin, HOMA-IR, LH:FSH ratio, transvaginal ultrasound. High AMH with irregular cycles is diagnostically meaningful. See myo-inositol for PCOS.
Where to test
kindr Fertility Hormone Test covers AMH plus FSH, LH, estradiol, TSH, and prolactin from a mail-in sample, with clinician interpretation and a personalized plan. Results in 5–7 business days.
Sources
- Steiner AZ, et al. Association between biomarkers of ovarian reserve and infertility among older women of reproductive age. JAMA 2017.
- La Marca A, et al. Anti-Müllerian hormone (AMH): what do we still need to know? Hum Reprod 2009.
- Practice Committee of ASRM. Testing and interpreting measures of ovarian reserve. Fertil Steril 2020.
Related
Frequently asked questions
What is a "normal" AMH?
AMH is age-dependent. Roughly: 2.0–6.8 ng/mL at 25–34, 1.5–4.0 at 35–37, 1.0–3.0 at 38–40, 0.5–2.5 at 41–42, < 1.0 over 43.
Does low AMH mean I cannot get pregnant?
No. AMH predicts ovarian reserve (how many eggs), not egg quality (whether they fertilize). Many women with low AMH conceive naturally; some with high AMH struggle. It is one data point.
When should I test?
AMH is stable across the cycle — test any day. Avoid testing on hormonal birth control (it falsely suppresses the number).
Can I improve my AMH?
AMH reflects follicle count, which is finite. Lifestyle and supplements do not raise it. They can improve egg quality, which is different and matters more for outcomes.
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Written and medically reviewed by the Kindr Health Clinical Team · Published 2026-06-19 · Last reviewed 2026-06-23. Compounded medications are prepared by FDA-registered 503A pharmacies and are not FDA-approved drug products.