FSH
Also known as Follicle-Stimulating Hormone
What it is
Follicle-Stimulating Hormone is produced by the pituitary gland and regulates the menstrual cycle and egg development.
Why it matters
FSH tends to rise as ovarian reserve declines, which makes it one of the markers used to help understand where someone is in the reproductive lifespan, including the approach to menopause. Because it moves in a feedback relationship with estradiol, the two are typically interpreted together rather than separately: a rising FSH alongside a falling estradiol is a different picture than either value moving on its own. It's one of the hormone panel markers most relevant to understanding menstrual cycle irregularities.
FSH is one of the markers in Zaro's Signal panel and every tier above it.
This information is for educational purposes and is not a substitute for professional medical advice. Always talk to a physician about your specific results and health history.
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