CA 15-3 (Breast Cancer)

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This test measures Cancer antigen 15-3 in the blood. (CA 15-3) is a protein that is produced by normal breast cells but in many people with cancerous breast tumors, there is an increased production.

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Blood.

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No specific patient preparation protocol required. Inform the doctor if you are on any medications, have any allergies or underlying medical conditions before this test.

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[vc_column_text]5 Hours.[/vc_column_text]

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Cancer antigen 15-3 (CA 15-3) is a normal product of breast cells. Concentrations of CA 15-3 in the blood are often increased in breast cancer. CA 15-3 does not cause cancer; rather, it is a protein that is shed by the tumour cells, making it useful as a marker to follow the course of the cancer. CA 15-3 is rarely elevated in women with localised breast cancer but is increased in about 75% of those with breast cancer that has metastasised (spread to other organs). CA 15-3 also may be elevated in healthy people and in individuals with other cancers, or diseases, such as bowel cancer, lung cancer, cirrhosis, hepatitis, and benign breast disease.

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