Follicle-Stimulating Hormone

General

Synonym/Acronym:
follitropin, FSH.

Rationale
To distinguish primary causes of gonadal failure from secondary causes, evaluate menstrual disturbances, and assist in infertility evaluations.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Electrochemiluminescence Immunoassay.

Age Conventional Units and SI Units
Neonate–5 mo
Male 0.2–4.1 international units/L
Female 0.2–14.2 international units/L
Child–17 yr Less than 10 international units/L
Adult male 1.4–15.5 international units/L
Adult female
Follicular phase 3.5–12.5 international units/L
Luteal phase 4.7–21.5 international units/L
Postmenopause 25.8–134.8 international units/L

Critical Findings and Potential Interventions
N/A

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