The CA 15-3 Test is a blood test that measures the level of cancer antigen 15-3 (CA 15-3), a protein that is often elevated in individuals with breast cancer. It is primarily used for monitoring breast cancer progression, treatment response, and detecting recurrence rather than for initial diagnosis.
Why is the CA 15-3 Test Done?
✅ Monitor breast cancer – Helps track cancer progression and response to treatment.
✅ Detect recurrence – Used after treatment to check if cancer has returned.
✅ Assess the effectiveness of therapy – Helps evaluate if chemotherapy or other treatments are working.
✅ Differentiate between benign and malignant conditions – Can assist in diagnosis along with other tests.
CA 15-3 Test (Cancer Antigen 15-3 Test)
