A multicentre evaluation of the Elecsys anti-Müllerian hormone immunoassay for prediction of antral follicle count.

Research Question: What concentration of anti-Müllerian hormone (AMH) corresponds to an antral follicle count (AFC) >15 for determination of ovarian reserve?

Design: A prospective study conducted at 13 US fertility clinics in women aged 21-44 years who presented for AFC evaluation by transvaginal ultrasound. Serum samples were collected at the time of AFC evaluation (menstrual cycle day 2-4). AMH concentrations were measured by the Elecsys AMH immunoassay; oestradiol and follicle-stimulating hormone (FSH) concentrations were also measured.