Sample results
Breast cancer is a malignant tumor that develops in breast tissue, most commonly in the milk ducts or lobules. It is caused by genetic mutations that lead to uncontrolled cell growth, often influenced by hormones like estrogen and progesterone. The Cancer Antigen CA 15-3 blood test is the most important test for monitoring treatment effectiveness and detecting recurrence in breast cancer patients.
Breast cancer is caused by genetic mutations in breast cells that lead to uncontrolled growth and division. These mutations can be inherited through BRCA1 and BRCA2 genes or acquired during a person's lifetime due to hormonal exposure, environmental factors, and aging. Prolonged exposure to estrogen and progesterone, obesity, alcohol consumption, and radiation exposure can increase the risk of developing these cancer-causing mutations in breast tissue.
The Cancer Antigen CA 15-3 test is the most important blood test for monitoring breast cancer because it detects elevated protein levels often found in people with breast cancer, especially in advanced stages. This tumor marker is essential for tracking how well treatment is working and detecting if cancer has returned after initial treatment. The CA 27.29 test is another critical marker that serves a similar purpose and is particularly useful for monitoring ongoing treatment effectiveness. While these blood tests cannot diagnose breast cancer initially, they are invaluable tools for managing the disease once diagnosed through imaging and biopsy.
You should get tested if you notice a new lump or mass in your breast or underarm, experience unexplained breast pain that does not go away, or notice changes in breast skin texture such as dimpling or puckering. Testing is also important if you have nipple discharge (especially if bloody), sudden changes in breast size or shape, or a family history of breast cancer with BRCA gene mutations. If you are undergoing breast cancer treatment, regular tumor marker blood tests help monitor treatment effectiveness and detect early signs of recurrence.
What this means
Your CA 15-3 level is elevated above the normal reference range. While elevated levels are commonly seen in metastatic breast cancer and certain ovarian cancers, they should be interpreted by your oncologist alongside imaging and other clinical findings to assess disease status and treatment response.
Recommended actions
Share these results with your oncologist immediately for clinical correlation
Continue following your prescribed cancer treatment plan exactly as directed
Schedule any recommended imaging or additional tests to monitor disease progression
Retest CA 15-3 every 1-3 months during treatment as recommended by your care team
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Sample results
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