Growth Hormone, Stimulation and Suppression Tests
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Somatotropic hormone, somatotropin, GH, hGH.
To assess pituitary function and evaluate the amount of secreted growth hormone to assist in diagnosing diseases such as giantism and dwarfism.
Serum collected in a gold-, red-, or red/gray-top tube.
|Age||Conventional Units||SI Units (Conventional Units × 1)|
|Cord blood||8–40 ng/mL||8–40 mcg/L|
|1 d||5–50 ng/mL||5–50 mcg/L|
|1 wk||5–25 ng/mL||5–25 mcg/L|
|Child||2–10 ng/mL||2–10 mcg/L|
|Male||0–5 ng/mL||0–5 mcg/L|
|Female||0–10 ng/mL||0–10 mcg/L|
|Male older than 60 yr||0–10 ng/mL||0–10 mcg/L|
|Female older than 60 yr||0–14 ng/mL||0–14 mcg/L|
|Rise above baseline||Greater than 5 ng/mL||Greater than 5 mcg/L|
|Peak response||Greater than 10 ng/mL||Greater than 10 mcg/L|
|Suppression Tests||0–2 ng/mL||0–2 mcg/L|