Substances, usually proteins, normally found in small amounts in the blood. However, in the presence of some types of cancer, elevated blood levels of tumor markers may occur. Thus, the blood dosage of these substances can help in the diagnosis and monitoring of certain tumors. The main markers and examples of tumors to which they relate can be seen below:

  • CEA: colon, stomach, breast, pancreas and lung;
  • CA 15-3: breast and lung;
  • CA 19-9: colon and pancreas;
  • PSA: prostate;
  • Beta-HCG: testicle;
  • Alpha-fetoprotein: testis and liver.
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This content is part of the Oncoclínicas glossary with all terms related to Oncology and its treatments.
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