There are several hormones that we can measure and analyze during a woman's menstrual cycle to obtain information about her ovarian reserve or about whether or not ovulation is taking place, such as FSH during the first days of the cycle or progesterone in the blood during the second phase of the cycle; but, without a doubt, the hormone that has been shown to give us the most reliable information about a woman's ovarian reserve is the anti-Müllerian hormone, whose acronym is AMH.
AMH has several advantages over other hormones whose determination we previously used more commonly to assess a woman's ovarian reserve, such as FSH. AMH values do not depend on the time of the cycle at which they are determined and have low intra- and inter-individual variability.
We know that antiMüllerian hormone, as a marker of ovarian reserve, decreases as the years go by and we consider a low ovarian reserve as a general rule when we find values below 1 ng/ml. Even so, it is always essential to complement this determination with an ultrasound evaluation with an antral follicle count.
