FSH levels vary throughout the menstrual cycle and peak prior to ovulation which is around day 14 of the menstrual cycle.
It is important that the blood sample for the test is taken on day 3 of the menstrual cycle, FSH levels at day 3 are typically low. Typical anti-Mullerian Hormone (AMH) levels for a fertile female vary depending on age. AMH levels are measured in pmol/L and reference range levels fall with age. Measuring levels is important as it is then easy to compare to the expected level for your age. Your level can also then be compared with expected levels for other age groups.