hCGWerte

HCG values refer to the concentration of human chorionic gonadotropin in blood or urine. In clinical practice, hCG is measured as beta-hCG in serum and reported in milli-international units per milliliter (mIU/mL). Urine tests provide qualitative results (pregnant or not), while serum beta-hCG provides a numeric value that can be used to monitor pregnancy over time.

Primary uses include confirming pregnancy, dating and assessing early pregnancy viability, and monitoring after treatment or miscarriage. A nonpregnant person typically has hCG below 5 mIU/mL. Pregnancy is indicated when hCG rises above the assay’s threshold, which for many immunoassays is about 5–25 mIU/mL, and for many home tests around 20–25 mIU/mL.

In early pregnancy, beta-hCG usually doubles roughly every 48 hours during the first 4 weeks; slower rises or plateaus can suggest a nonviable or ectopic pregnancy. Ultrasound visibility of an intrauterine gestation generally occurs when hCG reaches about 1,000–2,000 mIU/mL, depending on gestational age and ultrasound sensitivity (the discriminatory zone).

Typical ranges by gestational age are highly variable between laboratories, but commonly cited approximate values are: a few weeks after conception a few tens to hundreds of mIU/mL; at 5–6 weeks thousands to tens of thousands; peak first trimester can reach several hundred thousand mIU/mL, then decline through the second trimester to lower levels.

Elevated hCG outside pregnancy can occur with trophoblastic disease or certain cancers (most commonly germ cell tumors). Extremely high levels may indicate molar pregnancy or multiple pregnancy. Low or slowly rising hCG after pregnancy loss may prompt further evaluation. Interference from heterophile antibodies or medications can cause false results; results should be interpreted by clinicians in context.