CA-125 — Ovarian Cancer Marker: Normal Range, Interpretation
Updated: June 2025
CA-125 is a glycoprotein used as the primary tumor marker for ovarian cancer. Elevated levels are seen in ovarian malignancies, endometriosis, pelvic inflammatory disease, and in the first trimester of pregnancy.
Reference Range
0–35 Ед/мл
Causes of Elevation
- Ovarian cancer (serous type)
- Endometriosis
- Uterine fibroids
- Pelvic inflammatory disease
- Liver cirrhosis
- Pericarditis, pleuritis
Track your biomarker trends with Lissa Health.