Human Chorionic Gonadotropin (hCG) in Serum/Plasma

Why Is This Test Done?

Your healthcare provider may order an hCG test to confirm pregnancy, especially if you have missed periods or suspect pregnancy. It can also be used during early pregnancy to check for normal development or detect issues like a miscarriage, ectopic pregnancy, or molar pregnancy. In non-pregnant individuals, it may be used to investigate symptoms like unexplained vaginal bleeding or infertility.

When Might You Get This Test?

You might receive this test during the first few weeks of pregnancy, often as early as 7–10 days after conception. It may also be done periodically during pregnancy to monitor progress. Outside of pregnancy, it could be ordered if you’re experiencing symptoms that suggest hormonal imbalances or reproductive health concerns.

What to Expect Before the Test

No special preparation is usually needed, but your provider may advise against certain activities (like heavy exercise) or medications that could affect results. If you’re pregnant, you may be asked to fast for a few hours before the blood draw, but this isn’t always required.

What Happens During the Test?

A healthcare professional will draw blood from a vein in your arm. The process is quick and typically painless, though you might feel a slight pinch. The blood sample is then sent to a lab for analysis.