Reviewed: 13. Juli 2026
CA 15-3 Cancer Antigen 15-3 (CA 15-3)
Unit: U/ml
Quick Explanation
CA 15-3 is mainly used for monitoring already diagnosed breast cancer and is less suitable for early detection, since it can also be elevated with benign breast conditions. Interpretation is always done in the overall medical context.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Benign breast conditions
- ·Liver function disorder
- ·Known breast cancer (for monitoring)
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Is this value being used to monitor my condition?
- →Should additional imaging be done?
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Start for free →Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.