Davis's Lab & Diagnostic Tests

Human Chorionic Gonadotropin

Human Chorionic Gonadotropin is a topic covered in the Davis's Lab & Diagnostic Tests.

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Chorionic gonadotropin, pregnancy test, HCG, hCG, α-HCG, β-subunit HCG.

Common Use:
To assist in verification of pregnancy, screen for neural tube defects, and evaluate human chorionic gonadotropin (HCG)–secreting tumors

Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.

Normal Findings:
(Method: Immunoassay)

Conventional UnitsSI Units (Conventional Units × 1)
Males and nonpregnant femalesLess than 5 milli international units/mLLess than 5 international units/L
Pregnant females by week of gestation:
 Less than 1 wk5–50 milli international units/mL5–50 international units/L
 2 wk5–100 milli international units/mL5–100 international units/L
 3 wk200–3,000 milli international units/mL200–3,000 international units/L
 4 wk10,000–80,000 milli international units/mL10,000–80,000 international units/L
 5–12 wk10,000–200,000 milli international units/mL10,000–200,000 international units/L
 13–24 wk5,000–80,000 milli international units/mL5,000–80,000 international units/L
 26–28 wk3,000–15,000 milli international units/mL3,000–15,000 international units/L

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