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Hormones

LH unit converter

Luteinizing hormone (range depends strongly on sex and cycle phase)

Also known as: Luteinizing hormone, Luteinising hormone, Lutropin, ICSH, Luteinisierendes Hormon, Hormone lutéinisante

Converter

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Reference range

UnitAdultsMenWomen
IU/L = mIU/mL1.8 – 251.8 – 8.65 – 25

Source: MedlinePlus (NLM): Luteinizing hormone (LH) blood test · Last reviewed: 2026-10-14

Note from the source: Men over 18: 1.8-8.6 IU/L; women before menopause 5-25 IU/L (peaks higher mid-cycle); after menopause 7.7-58.5 IU/L (MedlinePlus)

Frequently asked questions

What is the reference range of LH?

For adults the range is 1.8 – 25 IU/L (MedlinePlus (NLM): Luteinizing hormone (LH) blood test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for LH?

Common units are IU/L.

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