AMH and polycystic ovary syndrome: However, consistent with an important role for AMH in addition to androgens in the ovulation process, serum AMH levels are correlated with PCOS severity in terms of ovulation12 and in women with PCOS, AMH levels are lower in patients with a hyperandrogenic normo-ovulatory phenotype than in women with a non-hyperandrogenic oligo-anovulatory phenotype.53