CA 15-3

What Kind of Doctor Do I Need? Slideshow

Medical Definition of CA 15-3

CA 15-3: A tumor marker most useful in following the course of treatment in women diagnosed with breast cancer, especially advanced breast cancer. CA 15-3 levels are rarely elevated in women with early stage breast cancer.

Cancers of the ovary, lung, and prostate may also raise CA 15-3 levels. Elevated levels of CA 15-3 may be associated with noncancerous conditions, such as benign breast or ovarian disease, endometriosis, pelvic inflammatory disease, and hepatitis. Pregnancy and lactation can also cause CA 15-3 levels to rise.


Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Reviewed on 6/9/2016

Health Solutions From Our Sponsors