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Also known as: Follicle-stimulating Hormone; Follitropin
Formal name: Follicle-stimulating Hormone, serum or urine

At a Glance

Why Get Tested?

To evaluate fertility issues, function of reproductive organs (ovaries or testicles), or pituitary function

In children, to evaluate early or delayed sexual maturation (puberty)

When to Get Tested?

For women, when you are having difficulty getting pregnant or are having irregular or absence of menstrual periods

For men, when your partner cannot get pregnant, or you have a low sperm count, low muscle mass or decreased sex drive

When your healthcare provider thinks that you have symptoms of a pituitary disorder or hypothalamic disorder

When a health practitioner suspects that a child has delayed or earlier than expected sexual maturation

Sample Required?

A blood sample drawn from a vein in your arm; sometimes a random urine sample or 24-hour urine collection may be taken

Test Preparation Needed?

None, but the timing of a woman's sample will be correlated with her menstrual cycle.