Tumor markers in Barranquilla, Colombia

What are tumor markers?

They are substances that can rise in the blood with certain cancers. Common ones include PSA (prostate), CEA (colon and others), CA-125 (ovary), CA 19-9 (pancreas and bile ducts), CA 15-3 (breast) and alpha-fetoprotein (liver and testicle).

Can they tell me if I have cancer?

Not on their own. They can rise for non-cancer reasons such as inflammation, infection or liver disease, and can be normal even when a tumor is present. That is why, except in specific cases like PSA, they are not recommended as screening in healthy people.

What are they used for?

Mainly in people already diagnosed: to check whether treatment is working, monitor for recurrence and, in some cases, support the diagnosis together with imaging and biopsy.

Who interprets them?

The oncologist or treating specialist. How the value changes over time usually matters more than a single result.

Find where to get tumor marker tests

On MedicosDoc you can find clinical laboratories and oncologists. Compare options and book your appointment.