Glycoprotein 15-3 is actually an antigen associated with malignancies such as breast cancer, and its high or low numbers can determine to some extent whether you have breast or ovarian cancer. Glycoprotein 15-3 is also an important indicator to monitor for metastasis and recurrence of tumors after surgery for breast and ovarian cancer.
The glycoconjugate antigen 15-3 is actually two monoclonal antibody glycoantigens derived from breast cell cancer cells and breast fatty acids. If this test is found to be outside the normal range in clinical practice, other tests may be done to rule out tumors. This is mainly because the specificity of this test is low and there are many factors affecting the test results, so it can only be used as a preliminary tumor screening in clinical practice, but not as a tumor diagnosis. If the result of this test is high, it indicates the presence of breast cancer, as well as ovarian cancer, cervical cancer, colon cancer, lung cancer, etc. The glycoconjugate antigen 15-3 may also be abnormally elevated. It is not enough to find this one indicator elevated, but you need to go to oncology for further tests to confirm whether you have cancer.
But glycochain antigen 15-3 can determine whether a tumor has metastasized after breast cancer surgery, and when it is greater than 100, it can determine that the tumor has metastasized, because glycochain antigen 15-3 levels correlate well with the prognosis for surgery.