cancer antigen 15-3 (CA15-3)

Description

A protein that may be found in high amounts in the blood of people with certain types of cancer, particularly breast cancer.

CA15-3 can be used as a tumour marker. It is used to monitor a person’s response to treatment or to see if breast cancer has come back (recurred) after treatment.

Also called carbohydrate antigen 15-3.

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