The AMH test: normal ranges, low AMH myths and conception odds

What Does AMH Actually Tell Us?

Anti-Müllerian Hormone (AMH) is secreted by microscopic follicles measuring 2 to 9 mm in diameter within the ovary. Because these growing follicles correlate proportionally with the total primordial follicle pool, serum AMH provides a reliable reflection of female ovarian reserve.

Unlike Follicle Stimulating Hormone (FSH) and Estradiol, which fluctuate dramatically throughout the menstrual cycle, AMH levels remain relatively stable and can be measured via a simple blood draw on any cycle day.

Age-Stratified AMH Reference Ranges (ng/mL)

• High Reserve / Possible PCOS (>4.0 ng/mL): Characteristic of polycystic ovarian morphology; requires mild stimulation and agonist trigger protocols to prevent Ovarian Hyperstimulation Syndrome (OHSS).
• Normal Optimal Reserve (1.5 – 4.0 ng/mL): Expected physiological range for women in their 20s and early-to-mid 30s.
• Low / Diminished Reserve (0.7 – 1.4 ng/mL): Early indication of dwindling follicular pool; prompts timely family planning or tailored IVF protocols.
• Very Low Reserve (<0.7 ng/mL): Requires specialized embryology handling, duo-stim, or freeze-all batching to maximize blastocyst yield.

The Biggest Medical Myth: Low AMH Does Not Mean Poor Egg Quality

The single most common misconception in fertility clinics across India is telling a 30-year-old woman with an AMH of 0.8 ng/mL that her "eggs are bad."

AMH measures follicle quantity, not genetic quality. Egg quality is governed primarily by female biological age, not the quantity of remaining follicles. A 29-year-old woman with an AMH of 0.6 ng/mL may only produce 4 eggs during retrieval, but 60% of those eggs are likely to be chromosomally normal (euploid), resulting in a healthy pregnancy. Conversely, a 42-year-old woman with an AMH of 2.5 ng/mL may produce 12 eggs, but 80% may be aneuploid due to age-related meiotic spindle errors.