CA 125

CA 125

CA 125 (pronounced: see-ay one two five), also known as Cancer Antigen 125, is a protein that is often found in higher levels in the blood of women with ovarian cancer. It is used as a tumor marker in the detection and management of this type of cancer.

Etymology

The term "CA 125" stands for "Cancer Antigen 125". It was named this way because it was the 125th cancer antigen to be discovered.

Related Terms

• Tumor marker: A substance found in the body when cancer is present. CA 125 is one such marker, often found in higher levels in women with ovarian cancer.
• Ovarian cancer: A type of cancer that begins in the ovaries. CA 125 levels are often used to monitor the progress of this disease.
• Protein: A molecule made up of amino acids. CA 125 is a type of protein.
• Antigen: A substance that the body recognizes as foreign and that can provoke an immune response. CA 125 is considered an antigen.

See Also

• CA 19-9: Another type of cancer antigen, often associated with pancreatic cancer.
• CA 15-3: A cancer antigen that is often associated with breast cancer.

External links

• Medical encyclopedia article on CA 125
• Wikipedia's article - CA 125

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