Anti-Mullerian hormone, or AMH, is a protein produced by the small follicles in your ovaries. An AMH blood test measures the level of this hormone to give your provider a snapshot of your ovarian reserve, which is the estimated number of eggs you have remaining. This test has become a common part of fertility evaluations, but there is a lot of confusion about what it actually means and what it can and cannot tell you.
How the Test Works
An AMH test involves a simple blood draw that can be done at any point during your menstrual cycle, which makes it more convenient than some other fertility-related tests that require specific timing. Results are typically reported in nanograms per milliliter (ng/mL). In general, higher AMH levels suggest a larger number of remaining eggs, while lower levels suggest a smaller supply.
Your provider may order an AMH test as part of a broader fertility workup if you are having difficulty conceiving. The AMH test is also commonly used before procedures like IVF to help predict how your ovaries might respond to stimulation medications. Some women request the test on their own simply to get a better understanding of where they stand in terms of their reproductive timeline. If you are beginning to think about your fertility, preconception counseling can help you understand all of your options.
