Luteinizing Hormone

General

Synonym/Acronym:
luteotropin, LH, interstitial cell–stimulating hormone (ICSH).

Rationale
To assess gonadal function related to fertility issues and response to therapy.

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

Normal Findings
Method: Electrochemiluminescent Immunoassay.

Concentration by Gender and by Phase (in Females)Conventional and SI Units
AgeMaleFemale
1 mo–1 yrLess than 0.5 international units/mLLess than 0.5 international units/mL
1–6 yrLess than 1.4 international units/mLLess than 0.6 international units/mL
7–11 yrLess than 1.5 international units/mLLess than 3.2 international units/mL
12–14 yr0.1–7.8 international units/mLLess than 12 international units/mL
15–18 yr1.3–9.8 international units/mL0.5–41.7 international units/mL
Adult1.2–9.6 international units/mL Phase in Females
1.9–14.6 international units/mL
Follicular17–15 international units/mL
Midcycle12.2–118 international units/mL
Luteal0.7–12.9 international units/mL
Postmenopausal5.3–65.4 international units/mL

Critical Findings and Potential Interventions
N/A

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