A blood test measuring AMH which is a hormone found in a woman's ovaries can predict the age at which a woman is likely to reach menopause, and thus give an idea as to when she is likely to stop being fertile. This is usually about a decade before menopause age.
This test is particularly useful for women who have an early menopause and would allow them to plan their family accordingly.
Scientists in Iran have carried out a new study that has used this test to predict menopause, and have found that it is accurate to within about a third of a year.
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