New automated antimüllerian hormone assays are more reliable than the manual assay in patients with reduced antral follicle count.

Objective: To compare the strength of the relationship between antral follicle count (AFC) and serum antimüllerian hormone (AMH) concentrations obtained with two automated and one manual AMH assays in three different AFC populations.

Design: Prospective cohort study.

Setting: University-affiliated IVF-ET center.