Objective: To correlate Anti-Müllerian hormone (AMH) levels with years since menarche as well as to investigate the AMH relationship with ovarian morphology and levels of androgens in healthy normo- ovulatory women and in women with polycystic ovary syndrome (PCOS).

Design: Prospective clinical study.

Setting: University Hospital of Alexandroupolis, Lito Maternity Hospital.

Patients: Forty two healthy normo-ovulatory women and sixty one women with PCOS, recruited on the basis of the classic PCOS criteria (Rotterdam consensus meeting definition of PCOS (ESHRE/ASRM, 2004).

Interventions: Fasting blood was obtained from all subjects in the early follicular phase (days 5-6) after spontaneous or induced menses (in PCOS), and transvaginal ultrasound examination was performed. Main outcome measures: Assessment of values for follicular stimulating hormone (FSH), testosterone (T), AMH, as well as assessments of years since menarche and ovarian volume.

Results: AMH had a statistically significant positive correlation with the ovarian volume (r =0,623, r =0,579 P<0.01) and negative correlation with years since menarche (r =-0,766, r =-0,796 (P<0.01). In women with PCOS, AMH and years since menarche had a significant correlation with testosterone (r =0,477, r = -0,527, P<0.01)

Conclusions: This study underlines the relation between AMH and years since menarche as well as the AMH differences in relation with certain clinical or endocrine characteristics between normal and PCOS women.