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.

AgeConventional Units and SI Units
Child
  PrepubertyLess than 10 international units/L
Adult
  Male1.4–15.5 international units/L
  Female
   Follicular phase3.5–12.5 international units/L
   Ovulatory peak4.7–21.5 international units/L
   Luteal phase1.7–7.7 international units/L
   Postmenopause25.8–134.8 international units/L

Critical Findings and Potential Interventions
N/A

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