CA 15-3

The CA 15-3 test measures the CA 15-3 blood level.

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CA 15-3 FAQ

What is the CA 15-3 test?

This test measures the blood level of CA 15-3.

Why is the CA 15-3 test important?

Elevated CA 15-3 levels are sometimes seen in the setting of breast and liver tumors. The CA 15-3 level is also sometimes used to monitor for disease activity.

What type of specimen will I submit?

This CA 15-3 is a blood test.

Do I need to fast to take this test?

Fasting is not necessary.

How long does it take to get test results?

It typically takes 4 business days or less.

Accesa Labs does not provide medical advice, diagnosis or treatment. All users should consult with a medical provider for specific health concerns.

Last updated on March 1, 2018

CA 15-3 for $169

CA 15-3 Blood Test - More Information

The CA 15-3 test, also known as a cancer antigen 15-3 lab test, measures the CA 15-3 blood level.

CA 15-3 is a helpful blood marker in the management of breast cancer. CA 15-3 levels are used to check for breast cancer recurrence and, at times, to get a rough approximation of how much tumor is in the body. Not all types of breast cancer tumors secrete CA 15-3 so it is not a useful blood marker in all people but it is useful to track on an ongoing basis if it was detected early on. Liver disease may artificially increase levels.

To get a CA 15-3 test near you, order online and get tested at the Quest Diagnostics location you selected to get your blood drawn. Once your CA 15-3 lab results are ready, they will be available for download. As can be seen on the sample CA 15-3 lab report above, the CA 15-3 blood level is reported as a number and can be compared against the reference range provided by the lab.

CA 15-3 blood levels cannot be used in isolation as absolute evidence of the presence or absence of a disease and all results should be evaluated in conjunction with a licensed medical provider.

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