CA-125

CA-125 is a protein found on the surface of many ovarian cancer cells and in some normal tissues. This test measures CA-125 levels and is used to monitor ovarian cancer treatment and recurrence.

Category: Tumor Markers

Also known as: ca-125, ca 125, cancer antigen 125

Reference range: 0–35 U/mL (Source: ABIM)

Standard unit: U/mL

High values may indicate

High CA-125 levels may indicate ovarian cancer, endometriosis, pelvic inflammatory disease, uterine fibroids, liver cirrhosis, or pregnancy.

Low values may indicate

Low CA-125 levels are normal and may indicate a good response to cancer treatment in patients being monitored.

Source: MedlinePlus, U.S. National Library of Medicine

Track your CA-125 over time with BloodId