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CA 125

👤by AP 0 comments 🕔Tuesday, July 26th, 2016

The CA-125 is a blood test that is often, but not always, elevated with ovarian cancer. If a postmenopausal woman has a mass and an elevated CA-125, she has an extremely high risk of having a cancer. However, in younger women, CA-125 is extraordinarily inaccurate. It is elevated by a large number of disease processes, including but not limited to, diverticulitis, pregnancy, irritable bowel syndrome, appendicitis, liver disease, stomach disease, and more. No one should get this test done unless they actually have a mass, or their doctor has some reason to get it. It should not be drawn just to see the level since it is not a reliable screening test for ovarian cancer.

CA 125 is a protein that is a so-called tumor marker or biomarker, which is a substance that is found in greater concentration in tumor cells than in other cells of the body. In particular, CA 125 is present in greater concentration in ovarian cancer cells than in other cells. It was first identified in the early 1980s, and the function of the CA 125 protein is not currently understood. CA stands for cancer antigen. CA 125 is often measured as a blood test.

CA 125 is usually measured from a venous blood sample. It can also be measured in fluid from the chest or abdominal cavity. The tests currently in use are all based upon the use of an antibody that is directed against the CA 125 protein (monoclonal antibody technique).

In 1991, an improved version of the test was introduced and is sometimes denoted as CA 125 - II. The numerical figure of the second generation test results may be higher or lower than a first generation test. The first generation test is no longer used. When comparing multiple CA 125 test results over time, it can be important to know which method was used.

The normal values for CA 125 may vary slightly among individual laboratories. In most laboratories, the normal value is 0 to 35 units/ml.

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