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Cancer Antigen CA 27.29 Blood Test

* This is not a home test kit. You will need to visit a local lab for testing.

Also Known As

Breast Cancer Antigen, Cancer-Associated Breast Antigen (CABA), Breast Carcinoma Associated Mucin Antigen

Purpose of the Cancer Antigen 27.29 Blood Test

Doctors order the cancer antigen (CA) 27.29 blood test to identify the cancer stage and evaluate the patient’s response to treatment – more notably in breast cancer.

Cancer Antigen (CA) 27.29 (29493)
Cancer Antigen (CA) 27.29 (140293)
Cancer Antigen (CA) 27.29 (140293)

What Does the CA 27.29 Blood Test Measure?

The CA 27.29 test screens for the cancer antigen 27.29, commonly produced in increasing amounts among patients with advanced breast cancer. It is a highly sensitive tumor marker in series during the treatment process.

Your physician will request the cancer antigen 27.29 blood test before the cancer treatment to evaluate if it has spread to other tissues. During the process, it determines how you respond to medications and therapy. And finally, after treatment, it helps predict the chances of cancer redeveloping in the future.

Aside from breast cancer, the CA 27.29 tumor marker test also helps evaluate other cancers, such as those involving the liver, uterus, colon, ovary, lung, kidney, and pancreas.

Who Should Take a CA 27.29 Test?

Those diagnosed with breast cancer must take the CA 27.29 blood test to assess the severity of the condition and monitor treatment response. In addition, patients in remission from stage II and III breast cancer must take the test for the doctor to predict the chances of recurrence.

Generally, it helps assess metastasis. Metastasis, or the process wherein cancer cells have proliferated to nearby tissues, determines if the cancer is at stage IV. In the case of breast carcinoma, the condition typically results in secondary breast cancer and often affects the lymph nodes, bone, lungs, liver, and brain.

CA 27.29 Tumor Marker Test Preparation

No special preparation is necessary before the blood sample collection.

CA 27.29 Test Results

The normal values for CA 27.29 do not exceed 38 U/mL. However, this upper limit may vary slightly on lab reports from other laboratories.

High levels of CA 27.29 can have varied implications depending on your test purpose. For example, if you’re undergoing treatment for breast cancer, elevated CA 27.29 may indicate that your body is not responding to the treatment well or that cancer has metastasized.

The result of the CA 27.29 test gives insights into the potential recurrence of cancer. However, it does not provide a conclusive analysis on its own. Hence, your doctor will likely order additional tests, such as the CA 15-3 blood test.

Where Can I Get a CA 27.29 Blood Test Done Near Me?

Step 1: Head to our website’s breast cancer blood tests section under the cancer screening tests category. Order the CA 27.29 blood test and download the lab test order. This serves as your doctor’s order for your lab work.

Step 2: Choose a partner medical center using our lab locator.

Step 3: Visit the laboratory you chose to have your blood collected.

Step 4: Expect the lab test results within 2-10 business days in your Personalabs account.

For an exact turnaround time for results, please contact us at 1-888-438-5227. We will contact the lab of your choice (Quest Diagnostics or LabCorp) as turnaround times vary depending on testing location or lab testing provider.

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Generate & Print Out Lab Order

Our physician network will approve your order within 2-4hrs.



Visit the Lab

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Get Your Results

Results can be provided in as little as 24-48 hrs. For more complex tests, please contact us for turn around times.


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