About Ovarian Cancer Blood Test | CA-125 Testing

The Cancer Antigen 125 (CA-125) test is used to evaluate the blood for CA-125, a cancer tumor marker. CA-125 is a surface protein of many ovarian cancer cells.

The Ovarian Cancer Blood Test | CA-125 Testing is a laboratory test. Your health care provider can explain what it measures and whether it is appropriate for your situation.

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How to prepare

Most lab tests require a blood or other sample. Follow any instructions given by your healthcare provider or the testing laboratory. Tell your provider about medications, supplements, or recent illnesses that might affect results.