How accurate is the ca-125 test for an ovarian cancer?

Not very. Ca 125 is touted as a screening tool for ov ca but is elevated in only 50% of those with early stage disease. Approx 1% of normals have a high ca 125. Since ovarian cancer is relatively uncommon, the ability of a positive test to predict ca is about 3%. There is general consensus that ca 125 is not a good screening tool for average risk females. Consider ca 125 for those with high risk.

Related Questions

What is the ca-125 test for ovarian cancer?

Measures a protein. The ca-125 test is a blood test that detects a protein in the blood that is produced by malignant ovarian cells. It is used to help determine if an ovarian cancer patient has had a relapse, or to help differentiate a cyst found by sonogram or ct. The most important point: it should never be used as a yearly screening test, and should not be requested by patients as a screening test. Read more...

How precise is the ca-125 test for ovarian cancer?

Other conditions too. Ca25 test can be positive in many conditions pregnancy endometriosis uterine fibroids pancreatitis liver disease normal menstruation other malignancies like lung, breast.Pacreas and GI tract cysts of the ovaries so here you have it it is not a specific test for ovarian cancer, thogh it may be positive as well. Read more...

Does ca-125 test for ovarian cancer always tell you if you are cancer-free?

Probably not. Ca-125 is useful for diagnosis and follow up of the disease, but it by itself is not effective to screen for early-stage ovarian cancer due to its low sensitivity and specificity. Therefore, it should not be the only test to tell if cancer free. Other tsts, like transvaginal ultrasound, may be needed. Read more...