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Can a blood test diagnose perimenopause?

A blood test is not useful in diagnosing perimenopause. Levels of a hormone called follicle stimulating hormone (FSH) can be measured by a blood test during perimenopause but are of no use in diagnosing it due to large variations in FSH level during perimenopause.

Perimenopause is also known as the menopausal transition. It is diagnosed based on the history of lengthening of the time in between periods, which progresses to skipped periods and episodes of no periods at all. Once a year has passed without a period, menopause is diagnosed. 

Dr. Julia Schlam Edelman
OBGYN (Obstetrician & Gynecologist)

Unfortunately, there is no blood test to confirm that you are definitely in perimenopause, nor is there a test that accurately predicts when your perimenopause will end. Perimenopause is usually established by taking a careful medical history.

In my experience, the most frequently requested test for perimenopause is a blood test for follicle-stimulating hormone (FSH). FSH is reputed to tell you whether you are perimenopausal or not, and when you can expect to enter postmenopause. In fact, FSH usually cannot give you this information.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.