CA 15-3 is to monitor the response to treatment of invasive breast cancer and to help watch for recurrence of the disease. When you have been or are being treated for invasive breast cancer, doctor asks to do this test.
Cancer antigen 15-3 (CA 15-3) is used to monitor response to breast cancer treatment and disease recurrence.
The reference range of serum CA 15-3 is less than 30 U/mL. The upper limit of the range varies depending on the laboratory and kit used for the test.
