Bloodwork

FSH

This test measures the level of follicle-stimulating hormone (FSH) in a sample of your blood. The normal range is 1.2–15.8 IU/L for male, 18 y+, as Mayo Clinic Laboratories (Test Catalog) publishes it. Labs differ by up to 27% for male · 18 y+.

A hormone is a chemical messenger in your bloodstream that controls the actions of certain cells or organs. FSH plays an important role in sexual development in children and fertility in adults.

FSH testing is used to help diagnose conditions that cause too much or too little FSH. The specific way the test is used depends on your sex and age.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

24 published ranges, each from a named source
Male · 18 y+
1.2–15.8 IU/L (varies by lab)ARUP 1.5–12.4 · Mayo 1.2–15.8 IU/L

These labs do not agree for male · 18 y+: the published adult ranges differ by up to 27%, so the same result can read as normal at one lab and be flagged at another — ARUP 1.5–12.4 · Mayo 1.2–15.8 IU/L. Both are real published values, shown as each lab states them.

Ranges from ARUP Laboratories Test Directory, Mayo Clinic Laboratories (Test Catalog).

All source ranges (24)

by lab, sex and age, as published ·
SourceSexAgeRange
ARUP Laboratories Test Directory Female 28 d – 5 mo 0.2–14.2 IU/L
ARUP Laboratories Test Directory Female 6 mo – 2 y 1.4–8 IU/L
ARUP Laboratories Test Directory Female 3 y – 4 y 0.6–5 IU/L
ARUP Laboratories Test Directory Female 5 y – 6 y 0.5–3.2 IU/L
ARUP Laboratories Test Directory Female 7 y – 9 y 0.4–4.4 IU/L
ARUP Laboratories Test Directory Female 10 y – 12 y 0.7–8.3 IU/L
ARUP Laboratories Test Directory Female 13 y – 15 y 1–9.1 IU/L
ARUP Laboratories Test Directory Female 16 y – 17 y 0.4–9.9 IU/L
ARUP Laboratories Test Directory Male 28 d – 5 mo 0.2–4.1 IU/L
ARUP Laboratories Test Directory Male 6 mo – 2 y 0.3–2.2 IU/L
ARUP Laboratories Test Directory Male 3 y – 4 y 0.3–2.3 IU/L
ARUP Laboratories Test Directory Male 5 y – 6 y 0.3–2 IU/L
ARUP Laboratories Test Directory Male 7 y – 9 y 0.3–2.6 IU/L
ARUP Laboratories Test Directory Male 10 y – 12 y 0.5–4.9 IU/L
ARUP Laboratories Test Directory Male 13 y – 15 y 1.1–7.4 IU/L
ARUP Laboratories Test Directory Male 16 y – 17 y 0.9–7.8 IU/L
ARUP Laboratories Test Directory Male 18 y+ 1.5–12.4 IU/L
Mayo Clinic Laboratories (Test Catalog) Female ≤ 1 y 1.2–12.5 IU/L
Mayo Clinic Laboratories (Test Catalog) Female 1 y – 10 y 0.5–6 IU/L
Mayo Clinic Laboratories (Test Catalog) Female 10 y – 15 y 0.9–8.9 IU/L
Mayo Clinic Laboratories (Test Catalog) Female 15 y – 18 y 0.7–9.6 IU/L
Mayo Clinic Laboratories (Test Catalog) Male 10 y – 15 y 0.6–6.9 IU/L
Mayo Clinic Laboratories (Test Catalog) Male 15 y – 18 y 0.7–9.6 IU/L
Mayo Clinic Laboratories (Test Catalog) Male 18 y+ 1.2–15.8 IU/L

What a high or low result can mean

LOINC2HPO, Monarch Initiative
A high result Elevated circulating follicle stimulating hormone level
A low result Decreased circulating follicle stimulating hormone concentration

This is reference information, not a diagnosis: only a clinician can interpret your result in context.

Sample
Serum or plasma · LOINC
Collection
Serum gel tube · 0.6 mL · Mayo Clinic Laboratories (Test Catalog)
Part of
Follitropin and Lutropin panel
Listed under
Female Infertility · Hormones · Menopause · Menstruation · Ovarian Disorders · Pituitary Disorders · Primary Ovarian Insufficiency
Code
LOINC 15067-2 · IU/L
Also called
Follitropin
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