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LH, luteotropin, interstitial cell–stimulating hormone (ICSH).
To assess gonadal function related to fertility issues and response to therapy.
Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.
|Concentration by Gender and by Phase (in Females)||Conventional and SI Units|
|Less than 2 yr||0.5–1.9 international units/mL|
|2–10 yr||Less than 0.5 international units/mL|
|11–20 yr||0.5–5.3 international units/mL|
|Adult||1.2–7.8 international units/mL|
|Less than 2–10 yr||Less than 0.5 international units/mL|
|11–20 yr||0.5–9 international units/mL|
|Phase in Females|
|Follicular||1.7–15 international units/mL|
|Ovulatory||21.9–80 international units/mL|
|Luteal||0.6–16.3 international units/mL|
|Postmenopausal||14.2–52.3 international units/mL|