It measures levels of AMH, or anti-mullerian hormone, and inhibin-B. They decrease as a woman approaches menopause. So researchers at the University of Michigan looked into whether the levels of the two hormones could accurately predict the timing of a woman's last menstrual period.
They found that levels became very low or virtually undetectable four-to-five years before her final period. So, the test should show when a woman has four-to-five years left to have a child.
"It's not precise," Ashton told co-anchor Erica Hill, "but it does give us a general range."
Some doctors are calling it an excellent predictor, and saying it will become a standard test for women.
This is so wrong and misleading. Women's fecundity, or ability to conceive, decreases dramatically many years before menopause (the final period). Perimenopause starts about a decade before menopause and during this time conception becomes increasingly unlikely. Anyone who believes that women can still easily conceive with their own eggs
in their forties is dangerously misinformed.
I learned this the hard way when seeking the advice of a reproductive endocrinologist (RE), or fertility specialist, when I was 39 years old. He said that conception in one's late thirties (!) and beyond is unlikely and my best option would be donor eggs from a young woman. I declined, but it took no less than 5 IVF cycles to finally conceive our twins when I was 41 years old. After the age of 41-42 conception with one's own eggs is highly unlikely because almost all eggs at this age are chromosomally abnormal. The celebrities who had children in their mid-forties and beyond used donor eggs, although this is rarely if ever mentioned.
Articles like this one are highly misleading and give women who delayed childbearing a false sense of security - "Oh, I can conceive right up to menopause" (which occurs on average at age 51) - this is just not true!
I therefore fail to see the usefulness of this test. Instead, better public health education regarding women's fertility would be much more effective.