CA15-3 (Female)
Cancer antigen 15-3 (CA 15-3) is a protein that is produced by normal breast cells. In many people with cancerous breast tumours, there is an increased production of CA 15-3 and the related cancer antigen 27.29. CA 15-3 does not cause cancer; rather, it is shed by the tumour cells and enters the blood. This test measures CA 15-3 in the blood. Since CA 15-3 can be measured in the blood, it is useful as a tumour marker to follow the course of the cancer.
Why a doctor may order this
To monitor breast cancer treatment and detect recurrence in patients with known disease.
Why you may need this
Breast cancer monitoring in selected cases — not general screening.
Related search terms
Clinic Collection
Choose a nearby partner clinic directly in the Elab mobile app.
Secure Digital Reports
All reports are encrypted and delivered to your Elab account.
Fast Result Notifications
You'll be notified the moment your lab report is ready.
Continue in the Elab App
Available for Android & iOS — free to download.