AMH is a hormone that gets secreted by the follicles in our ovaries during the reproductive cycle. Extend Fertility tests for this level by drawing your blood and sending it out to a lab.
Antral follicles are small sacs that contain an immature egg that could eventually mature and be released. Extend Fertility lets you know your antral follicle count in real time, while performing a transvaginal ultrasound that produces an image of your ovaries. The doctor literally counts them out and measures them while you're lying on the exam table.
Generally speaking, the lower your age and the higher your AMH level and antral follicle counts, the more eggs you're likely to produce before your retrieval. This is where things got tricky for me.