What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your CA 15-3 level means for your cancer monitoring. These notes include guidance on what changes in your levels may indicate about your treatment response or disease progression, and when you should discuss results with your oncologist. You'll also get the standard lab report and can track your CA 15-3 levels over time using our trends feature, which is especially helpful for monitoring cancer response during and after treatment.

When will I get my results?

Results are typically available within 1-2 business days after your blood sample is collected at the lab. You'll receive an email notification when your results are ready to view securely online. Given the importance of timely cancer monitoring, results are processed as quickly as possible.

Who should consider getting this test?

This test is specifically for people who have already been diagnosed with metastatic breast cancer or certain ovarian cancers. It's used for ongoing monitoring during and after treatment, not for initial cancer screening in healthy individuals. Your oncologist may order this test regularly to track how well your treatment is working and whether the cancer is responding, progressing, or recurring.

What does it mean if my CA 15-3 levels are rising?

Rising CA 15-3 levels over time may indicate that cancer is progressing or that treatment is not working as effectively as hoped. However, CA 15-3 levels should always be interpreted alongside other tests and clinical findings. If your levels are increasing, your oncologist will likely recommend additional imaging or tests to better understand what's happening and may adjust your treatment plan accordingly.

What does it mean if my CA 15-3 levels are falling?

Falling CA 15-3 levels typically suggest that your cancer treatment is working and the tumor burden is decreasing. This is generally a positive sign that your body is responding well to therapy. Your oncologist will continue monitoring your levels over time to ensure the downward trend continues and that you remain in remission or stable disease.

Can CA 15-3 be used to detect breast cancer early?

No, CA 15-3 is not recommended for early breast cancer detection or screening in healthy individuals. It's most useful for monitoring people who already have metastatic breast cancer, as levels are more likely to be elevated when cancer has spread. For early detection, mammograms and clinical breast exams are much more effective screening tools.

How often should I retest my CA 15-3 levels?

Testing frequency depends on your individual treatment plan and disease status. During active treatment, your oncologist may order CA 15-3 tests every 1-3 months to closely monitor response. After treatment or during remission, testing may occur every 3-6 months or as clinically indicated. Always follow your oncologist's specific recommendations for your situation.