Antral Follicle Count (AFC) & Anti-Mullerian Hormone (AMH)
Women are born with all the eggs they will ever have, and with age, the quantity of eggs goes down. Antral Follicle Count (AFC) & Anti-Mullerian Hormone (AMH) are two indirect ways that we can estimate “ovarian reserve” or the amount of eggs remaining in the ovaries.
Each egg is housed within a tiny fluid filled cyst called a follicle. Many of the follicles are not visible on ultrasound but the one/s that are growing with each cycle and those ready to start growing in a future cycle (antral follicles) can be seen with ultrasound. In addition, each follicle produces a small amount of the hormone AMH. Higher levels of AMH suggest more follicles and lower levels of AMH suggest less follicles. By counting the number of visible antral follicles and testing AMH levels in the bloodstream, we can estimate whether a woman’s quantity of eggs, or ovarian reserve, is in line with her age, increased or diminished compared to other women her age.