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www.reference.com/health/blood-test-reveal-cancer-markers-fda13822da84fcef

Blood tests are used to detect cancer markers, which are also called tumor markers and biomarkers, in the blood, according to the American Society of Clinical Oncology. Tumor markers are substances often produced by cancer cells, although healthy cells can also produce them.

www.mayoclinic.org/diseases-conditions/cancer/in-depth/cancer-diagnosis/art...

Tumor marker tests. Tumor markers are chemicals made by tumor cells that can be detected in your blood. But tumor markers are also produced by some normal cells in your body, and levels may be significantly elevated in noncancerous conditions. This limits the potential for tumor marker tests to help in diagnosing cancer.

www.breastcancer.org/symptoms/testing/types/blood_marker

Blood tests for cancer/tumor markers are used to detect cancer activity in the body. Your doctor may order a blood marker test to help diagnose and manage breast cancer. While breast cancer blood marker tests are promising, they're not absolutely conclusive. Learn more about breast cancer blood marker tests.

cisncancer.org/research/new_treatments/tumor_markers/how_it_works.html

How Do Tumor Markers Work? When diagnosing cancer, blood and pieces of tumor tissue are tested. These tests help to determine the characteristics of the tumor (aggressiveness, rate of growth, and degree of abnormality). Tests for tumor markers may be used with other laboratory tests or procedures such as x-rays to detect and diagnose some cancers.

www.medicalnewstoday.com/articles/320679.php

Eight cancers could be diagnosed with a single blood test ... researchers reveal how the blood test demonstrated high ... and these can act as markers for cancer. The new blood test works by ...

www.medicinenet.com/ca_125/article.htm

Read about CA 125, a test used to determine levels of a tumor marker that may be elevated in cases of ovarian cancer. Certain benign conditions, including endometriosis, uterine fibroids, and pelvic inflammatory disease, may be associated with increased CA 125 results. Learn about normal values for CA 125.

www.cancer.net/.../diagnosing-cancer/tests-and-procedures/tumor-marker-tests

Tumor markers are substances found at higher than normal levels in the blood, urine, or body tissue of some people with cancer. Although cancer cells often produce tumor markers, healthy cells in the body may produce them as well. Tumor markers are also called biomarkers.Tumor markers and cancerHigh tumor marker levels can be a sign of cancer.

www.healthcheckup.com/tests/blood-tests-for-cancer-markers

Blood tests for cancer markers are also called Tumor Markers. Tumor markers are substances present in the blood when you have cancer. Alpha Fetoprotein, CA 125, Osteocalcin, Catecholamine, Thyroglobulin, S-100 etc are the commonly used blood tests for cancer markers.

www.healthtestingcenters.com/what-blood-tests-are-used-diagnose-cancer

Tumor Marker Tests. Tumor markers are chemicals made by tumor cells or by the immune system in response to cancer. Various tests can be used to detect tumor markers in the blood, giving your doctor an indication that cancer may be present in the body. Among the most commonly administered tumor marker tests are:

www.cancer.gov/about-cancer/diagnosis-staging/diagnosis/tumor-markers-fact-sheet

Most tumor markers are made by normal cells as well as by cancer cells; however, they are produced at much higher levels in cancerous conditions. These substances can be found in the blood, urine, stool, tumor tissue, or other tissues or bodily fluids of some patients with cancer. Most tumor markers are proteins.