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Human Chorionic Gonadotropin (hCG)

Published: July 27, 2026Updated: August 25, 2026

This biomarker measures the levels of hCG, a hormone produced during pregnancy, to confirm pregnancy and monitor its progression.

Quick summary

hCG is a key hormone marker used to diagnose and monitor pregnancy.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
mIU/mL
Clinical utility
diagnostic
Result kind
quantitative
FDA-cleared
Roche hCG, Abbott hCG, Siemens hCG, Beckman hCG
interpretation: {"text":"0–5 mIU/mL: Non-pregnant individuals or very early pregnancy.","label":"Normal"}; {"text":">5 mIU/mL: Possible pregnancy or other conditions requiring further evaluation.","label":"Elevated"}

Human Chorionic Gonadotropin (hCG) is a hormone produced by placental trophoblastic cells during pregnancy. It is crucial for maintaining the corpus luteum and stimulating progesterone production in early pregnancy.

hCG levels rise rapidly in the first trimester, doubling approximately every 48 to 72 hours, and then plateau or decline. This pattern is essential for monitoring fetal development and detecting potential issues.

In non-pregnant individuals, elevated hCG levels may indicate certain cancers, such as testicular or ovarian cancer, or other medical conditions that warrant further investigation.

Frequently asked questions

What is a normal hCG level for a non-pregnant person?
A normal hCG level for a non-pregnant person is typically between 0–5 mIU/mL.
Can hCG levels indicate anything other than pregnancy?
Yes, elevated hCG levels can also be associated with certain cancers and other medical conditions.
  1. 1
    American College of Obstetricians and GynecologistsSource
  2. 2
    Mayo ClinicSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy