Description
CA 27.29 measures how much CA 27-29 is in your blood. Antigens like CA 27-29 that give information about cancer are called tumor markers. Breast cancer is the cancer most likely to release CA 27-29. CA 27-29 is the name of an antigen. An antigen is a substance that stimulates your body’s immune system. Certain types of cancer cells send CA 27-29 antigen into the blood. This test measures how much CA 27-29 is in your blood. Antigens like CA 27-29 that give information about cancer are called tumor markers. Breast cancer is the cancer most likely to release CA 27-29. The FDA has approved the CA 27-29 blood test as a way for healthcare providers to monitor people with breast cancer. CA 27-29 is not a screening test to find out whether you have breast cancer. If you have been diagnosed with breast cancer, your healthcare provider may order the CA 27-29 test:
To find out whether your cancer has spread before starting treatment
To find out how well your treatment is working
To find out whether your cancer has come back or spread after treatment
