What does low AMH mean with endometriosis?

Low AMH (anti‑Müllerian hormone) means your ovarian reserve—your remaining pool of recruitable follicles—looks lower than expected for your age. In people with endometriosis, low AMH can happen for more than one reason: the inflammatory impact of the disease itself, the presence of an ovarian endometrioma, and/or prior ovarian surgery. It’s also important to know what AMH can’t tell you—it doesn’t diagnose endometriosis, it doesn’t measure egg quality directly, and it doesn’t predict whether you can or can’t conceive on your own.

With endometriomas in particular, one AMH number can miss what’s happening ovary-by-ovary. We often look at AMH alongside an antral follicle count (AFC) on ultrasound, because AFC can show the “local” effect of a cyst (for example, fewer follicles on the side with the endometrioma even if the other ovary is compensating). If fertility planning is part of your goals, our team can help interpret AMH in the full context—your imaging, symptoms, prior treatments, and timeline—so you’re not making big decisions based on a single lab value.