Most women have a low level of CA-125 in their blood. Higher levels of CA-125 may indicate some form of abnormality, for some this may not mean ovarian cancer.
The CA-125 blood level is raised in about half the women who have early stage ovarian cancer and about 9 out of 10 women (90%) with more advanced ovarian cancer have raised CA-125 levels. Other causes for higher levels of CA-125 may also include menstruation, pregnancy and pelvic inflammatory disease. The the test is therefore recommended for women aged 50 and over.
- The CA-125 can currently only be booked when added to a CT health check.