Cancer antigen 15-3 (CA 15-3) is a protein (antigen) generated by cells in response to a number of changes within the body. This antigen is classified as a tumour marker because elevated levels may signal the presence of certain cancers, such as breast cancer (but also pancreas, liver, lung and ovary) and also a number of non cancerous conditions. It is important to understand that CA 15-3 tests are not used for diagnosing cancer as there are too many possible causes for an elevated result. The level may help evaluate how a cancer is responding to treatment, but if unexpectedly high in someone not known to have had cancer may trigger further investigation. Generally, variations in CA 15-3 levels assist cancer specialists in determining whether a tumour is stable, growing, shrinking, or has returned.
A Phlebotomy Only Test
This blood test is unavailable for fingerprick (microtainer) collection. If you're unsure about how to access this test or how the procedure works please watch this short video.
Sample Collection Options for this CA 15-3 (Cancer Marker) Test.
Arrange own Phlebotomy
Cost: Arrange Yourself
If you have access to a Healthcare Professional this kit for a CA 15-3 (Cancer Marker) Test has all they'll need.
Visit a Partner Clinic
Cost: Add £30
We have partnered with Superdrug and Circle Health Hospitals in order to provide you with phlebotomy.
Nurse Home Visits
Cost: Add £55
Let our Nurses come to your home or place of work - we cover Mainland England, Wales, Scotland & Northern Ireland.
Do you have a question about this CA 15-3 (Cancer Marker)? We aim to get back to you with an answer the same working day.
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