AMH and endometriosis: Concerning endometriomas, Kim et al. demonstrated that patients with stage IV endometriosis with endometriomas displayed significantly lower AMH levels than age- and BMI-matched controls (2.1 ± 0.3 ng/mL vs. 3.1 ± 0.4 ng/mL, mean ± SEM; P = 0.02) [20].