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CA-125 was initially detected using the murine monoclonal antibody designated OC125. Robert Bast , Robert Knapp and their research team first isolated this monoclonal antibody in 1981. [ 28 ] The protein was named "cancer antigen 125" because OC125 was the 125th antibody produced against the ovarian cancer cell line that was being studied.
The reason is that the test may be falsely normal (false negative) in many cases or abnormally elevated in people who have no cancer (false positive) in others. The main use of CA19-9 is therefore to see whether a pancreatic tumor is secreting it; if that is the case, then the levels should fall when the tumor is treated, and they may rise ...
CA-125: Mainly ovarian cancer, [13] but may also be elevated in for example endometrial cancer, fallopian tube cancer, lung cancer, breast cancer and gastrointestinal cancer. [14] Calcitonin: medullary thyroid carcinoma [15] Calretinin: mesothelioma, sex cord-gonadal stromal tumor, adrenocortical carcinoma, synovial sarcoma [9] Carcinoembryonic ...
CA-125 levels are not accurate in early stage ovarian cancer, as half of stage I ovarian cancer patients have a normal CA-125 level. [ 31 ] [ 29 ] CA-125 may also be elevated in benign (non-cancerous) conditions, including endometriosis , pregnancy , uterine fibroids , menstruation , ovarian cysts , systemic lupus erythematosus , liver disease ...
Every year, millions of women get mammograms to screen for breast cancer. About 10% of them are called back for further testing. And 7% to 12% of those women receive a false-positive result ...
For example, it can help to distinguish between adenocarcinoma of the lung and mesothelioma, a different type of lung cancer which is not normally CEA positive. Because even monoclonal antibodies to CEA tend to have some degree of cross-reactivity, occasionally giving false positive results, it is commonly employed in combination with other ...
False positive COVID-19 tests—when your result is positive, but you aren’t actually infected with the SARS-CoV-2 virus—are a real, if unlikely, possibility, especially if you don’t perform ...
HAMA interferences can give false positive or negative immunoassay results. HAMA bridging interference produces artificially higher results because HAMA's bind to immobilized mouse antibodies in place of substrate, secondary labeled antibodies will then bind to HAMA and produce a positive signal falsely indicative of substrate presence.