Tumor marker testing is a blood test that measures specific cancer-related antigens to evaluate an individual’s potential risk for certain cancers. It includes assessment of markers such as CA-125, CA 15-3, CA 19-9,Carcinoembryonic Antigen (CEA), and Prostate-Specific Antigen (PSA). Elevated levels may occur in both malignant and benign conditions; hence, this test serves as a risk assessment tool rather than a definitive diagnostic method.
Individuals with a family history of cancer, especially relevant types. Those with unexplained lumps or clinical signs requiring risk evaluation. Individuals with potential health concerns or suspected cancer risks.
Blood
2–4 weeks
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