Breast Cancer is a disease in which cancer cells form in the tissues of the breast. Generally, cancer will form in either the lobules or the ducts of the breast.  With early detection and treatment, many people can lead a normal life.  The CA 15-3 and the CA 27.29 are used to monitor a specific cancer antigen.  Select a breast cancer blood test to help monitor your response to treatment and manage metastatic carcinoma of the breast and more.

Thank you for browsing our selection of Breast blood tests and panels. Shop additional Cancer Screening Tests confidentially and order online without insurance or a doctor's note.


Walk-In Lab is contracted with LabCorp (LC) and Quest Diagnostics (QD) for routine lab testing. Please choose LC or QD to complete your order. If you prefer to receive a kit by mail for specimen collection, select Home Test Kits (KIT). LC, QD and KIT tests must be ordered separately.
LabCorp: Online lab testing is prohibited in MA, MD, NY, NJ and RI.
Quest Diagnostics: Online lab testing is prohibited in NY, NJ and RI.

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  1. Cancer Antigen (CA) 15-3 Blood Test

    CA 15-3 may used to monitor a person's response to breast cancer treatment and to help watch for breast cancer recurrence.

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  2. Cancer Antigen (CA) 27.29 Blood Test

    Used to manage patients with metastatic carcinoma of the breast.

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