# CA125

CA125 is a protein blood test clinicians sometimes use when investigating ovarian cancer symptoms or monitoring some high-risk surveillance plans.

Levels can rise with ovarian cancer, but also with endometriosis, fibroids, infection and pregnancy. Doctors pair it with imaging and examination; it is not a standalone screening test for the general public in the UK.

Also called: Cancer antigen 125.

Related: [Recovery](https://revns.com/dictionary/recovery.md), [Resting heart rate](https://revns.com/dictionary/resting-heart-rate.md)

---

Canonical: https://revns.com/dictionary/ca125
Index of everything: https://revns.com/llms.txt
revns gives training guidance, not medical advice.