LH
This test measures the level of luteinizing hormone (LH). The normal range is 1.3–9.6 IU/L for male, 18 y+, as Mayo Clinic Laboratories (Test Catalog) publishes it. Labs differ by up to 31% for male · 18 y+.
A hormone is a chemical messenger in your bloodstream that controls the actions of certain cells or organs. LH is usually measured in a sample of your blood. But in certain cases, it may be measured in urine (pee).
LH testing is used to help diagnose conditions that cause too much or too little LH. The specific way the test is used depends on your sex, age, and symptoms.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
13 published ranges, each from a named source- Male · 18 y+
- 1.3–9.6 IU/L (varies by lab)ARUP 1.7–8.6 · Mayo 1.3–9.6 IU/L
These labs do not agree for male · 18 y+: the published adult ranges differ by up to 31%, so the same result can read as normal at one lab and be flagged at another — ARUP 1.7–8.6 · Mayo 1.3–9.6 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 (13)
by lab, sex and age, as published ·
| Source | Sex | Age | Range |
|---|---|---|---|
| ARUP Laboratories Test Directory | Female | 7 y – 9 y | 0–0.7 IU/L |
| ARUP Laboratories Test Directory | Female | 10 y – 12 y | 0–6.8 IU/L |
| ARUP Laboratories Test Directory | Female | 13 y – 15 y | 0.3–23 IU/L |
| ARUP Laboratories Test Directory | Female | 16 y – 17 y | 0–26.4 IU/L |
| ARUP Laboratories Test Directory | Male | 7 y – 9 y | 0–0.7 IU/L |
| ARUP Laboratories Test Directory | Male | 10 y – 12 y | 0–3.4 IU/L |
| ARUP Laboratories Test Directory | Male | 13 y – 15 y | 0.3–5.6 IU/L |
| ARUP Laboratories Test Directory | Male | 16 y – 17 y | 1.1–9 IU/L |
| ARUP Laboratories Test Directory | Male | 18 y+ | 1.7–8.6 IU/L |
| Mayo Clinic Laboratories (Test Catalog) | Female | ≤ 18 y | 0.5–41.7 IU/L |
| Mayo Clinic Laboratories (Test Catalog) | Male | ≤ 18 y | 1.3–9.8 IU/L |
| Mayo Clinic Laboratories (Test Catalog) | Male | ≤ 14 y | 0.1–7.8 IU/L |
| Mayo Clinic Laboratories (Test Catalog) | Male | 18 y+ | 1.3–9.6 IU/L |
What a high or low result can mean
LOINC2HPO, Monarch InitiativeThis 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 · Pituitary Disorders · Primary Ovarian Insufficiency
- Code
- LOINC 10501-5 · IU/L
- Also called
- Lutropin, ICSH, Lutenin, Lutenizing hormone, Ovulation test