What is a tumor marker? CA 125 is elevated in ovarian cancer as well as in some benign conditions. 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.
What is a normal cancer marker for ovarian cancer?
Cancer antigen 125 (CA 125) is the only tumor marker recommended for clinical use in the diagnosis and management of ovarian cancer. The reference range of CA 125 is 0-35 units/mL (0-35 kU/L).
What marker is elevated in ovarian cancer?
The most extensively studied serum marker is cancer antigen 125 (CA-125), which is a protein associated with epithelial ovarian malignancies. Elevation of CA-125 levels may occur in endometriosis, pregnancy, pelvic inflammatory disease and in other types of cancer.
What is considered a very high CA 125 level?
Eventually, a CA 125 level of 35 units was found to be a useful cutoff point, with 99% of healthy women having values less than 35. Levels above 35 units are certainly seen in healthy women, but beyond the cutoff point of 35, the higher the value, the more likely there is trouble somewhere in the body.
What is considered a high tumor marker number?
Normal range: < 2.5 ng/ml. Normal range may vary somewhat depending on the brand of assay used. Levels > 10 ng/ml suggest extensive disease and levels > 20 ng/ml suggest metastatic disease.
What happens if tumor markers are high?
High tumor marker levels can be a sign of cancer. Along with other tests, tumor marker tests can help doctors diagnose specific types of cancer and plan treatment. Tumor marker tests are most commonly used to do the following: Learn if a person has cancer.
Does high CA-125 always mean cancer?
Does a high CA-125 always mean cancer? No, a high CA-125 does not always mean cancer is present. Generally speaking, the normal range of CA-125 is considered to be 0-35 units/mL, while a level above 35 units/mL is considered to be a high CA-125 level.
What is considered a high CA 19 9 level?
Here is what your results may mean: If your CA 19-9 is less than 37 U/mL, you may not have cancer. If your CA 19-9 is above 37 U/mL, you may have cancer of the pancreas, liver, gallbladder, lung, colon, or stomach.
How quickly does CA-125 rise?
The average time from serum CA125 increase to detection of a recurrent lesion by physical or imaging examination was 122 days. The correlation coefficient of serum CA125 level increase and tumor recurrence time was −0.674.
What is a bad CA125 level?
The tumor marker Ca 125 is a prognostic factor. Levels around 100 U/l are indicative of a bad prognosis.
How high can CA125 levels go?
High levels of CA 125 (from 125 to 10.000 U/ml and higher) were revealed in 54 from 57 patients (94.7%) with malignant ovarian tumors.
How accurate is CA125?
Results: Using a CA125 cutoff of 30 U/mL, an overall sensitivity of 94.8% (96.6% specificity) was obtained when comparing malignancies versus healthy postmenopausal controls, whereas a cutoff of 65 U/mL provided a sensitivity of 83.9% (99.6% specificity).