Cancer Antigen 125 (CA-125)

CA-125 (Cancer Antigen) Test, Carbohydrate Antigen (CA-125) Test

What Affects the Test

Results of a cancer antigen 125 test can be affected by:

• Medicines used to treat cancer.
• A recent radioactive scan, such as a bone scan.
• Belly surgery. The CA-125 test should be done at least 3 weeks after surgery.

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Author:	Maria G. Essig, MS, ELS	Last Updated: July 2, 2007
Medical Review:	Adam Husney, MD - Family Medicine Douglas A. Stewart, MD - Medical Oncology
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