To distinguish primary causes of gonadal failure from secondary causes, evaluate menstrual disturbances, and assist in infertility evaluations.
Serum (1 mL) collected in a red- or tiger-top tube.
|Age||Conventional Units and SI Units|
| Prepuberty||Less than 10 international units/mL|
| Male||1.4–15.5 international units/mL|
| Follicular phase||1.4–9.9 international units/mL|
| Ovulatory peak||6.2–17.2 international units/mL|
| Luteal phase||1.1–9.2 international units/mL|
| Postmenopause||19–100 international units/mL|
Follicle-Stimulating Hormone has been found in Davis's Lab & Diagnostic Tests
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