Ferritin is a blood protein that contains iron. A ferritin test helps your doctor understand how much iron your body stores.

Alpha-fetoprotein is the abbreviation for alpha-fetoprotein. In a developing baby's liver, this protein is produced. Baby's AFP levels are...

Certain cancers, such as colon cancer, are monitored with a carcinoembryonic antigen (CEA) test. A molecule called a carcinoembryonic...

Prostate-specific antigen (PSA) is a protein produced by the body's prostate gland and urinary system. PSA comes in a variety of forms...

This test measures the quantity of cancer antigen 125 in your blood. Certain malignancies can be monitored using...

In addition to stimulating your body's defensive system, CA 15-3 is also a powerful antioxidant. There are certain types of cancer cells...

On the surface of some cancer cells is a protein called cancer antigen 19-9 (CA 19-9). Tumor cells release CA 19-9 into the body...

In the PAP test (also known as Pap smear), cells on the cervix are examined for precancerous alterations that might develop into cervical...

Tumor antigen 50 (CA 50) is a carbohydrate found on the surface of some cancer cells and secreted into the blood stream where it may...