Why do you not test for AMH?

Based on medical society opinion from the American College of Obstetricians and Gynecologists (ACOG), Anti-Müllerian hormone (AMH) should not be used as a screening test for women who are looking to achieve a spontaneous pregnancy. AMH seems to be most useful for women undergoing in-vitro fertilization, as an indicator of how easy it will be to stimulate and harvest eggs from their ovaries.