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🩺 Five Essential Tumor Marker Tests to Help Detect Cancer

📌 Description

Cancer diagnosis is a multi-step process, but some blood tests can give early clues. These five important tumor markers are commonly used to support diagnosis, monitor treatment, and detect recurrence.
They are not confirmatory alone, but help doctors decide further imaging or biopsy.

🧪 5 Key Cancer Marker Tests

1. CA 19-9 – Mostly elevated in pancreatic and biliary tract cancers.


2. CEA (Carcinoembryonic Antigen) – Raised in colon cancer and sometimes in lung, breast, gastric tumors.


3. CA-125 – Mainly used for ovarian cancer detection & follow-up.


4. PSA (Prostate-Specific Antigen) – Marker for prostate cancer screening & monitoring.


5. AFP (Alpha-Fetoprotein) – Increased in liver cancer (HCC) and germ cell tumors.



These tests help in early suspicion, prognosis, and monitoring, but biopsy/imaging is required for confirmation.