CA 15.3 Breast Cancer Marker Test
Also known as: CA 15-3 Test, Cancer Antigen 15.3 Test
CA 15.3 Breast Cancer Marker Test test available at DNA Labs India for ₹1,580. Uses Chemiluminescent Microparticle Immunoassay on Serum samples. Results in 24 hours. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The CA 15.3 test is used to monitor the progress of breast cancer treatment and to check for recurrence by measuring CA 15.3 protein levels in the blood.
- Test Code
- 241
- Price
- ₹1,580
- Sample Type
- Serum
- Result Time
- 24 hours
- Fasting Required
- No
- Method
- Chemiluminescent Microparticle Immunoassay
Sample Collection
Provide a brief clinical history to the healthcare provider. No special preparation is required, but inform about any medications or medical conditions.
Method: Venipuncture
Laboratory Analysis
A blood sample is collected via venipuncture from a vein in the arm.
Report Delivery
Apply pressure to the puncture site with a cotton ball to prevent bruising. Resume normal activities unless advised otherwise.
Timeline: 24 hours
Patient Instructions
About This Test
Who Should Get This Test
The CA 15.3 test is used to monitor the progress of breast cancer treatment and to check for recurrence by measuring CA 15.3 protein levels in the blood.
How to Prepare
- Provide brief clinical history
- Sample should be refrigerated or frozen if not processed immediately
- Ensure proper labeling of the sample
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"The CA 15.3 test is crucial for monitoring breast cancer progression and treatment response. Consult your oncologist for personalized advice."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed sample
- Insufficient sample volume
- Improperly labeled or contaminated sample
Understanding Your Results
Normal
Range: <30 U/mL
Borderline
Range: 30-50 U/mL
Elevated
Range: >50 U/mL
If you experience symptoms of breast cancer (e.g., lump, nipple discharge, skin changes) or if test results are abnormal or changing over time.
Limitations
- ⚠Not recommended for initial screening or diagnosis of breast cancer
- ⚠May be elevated in non-cancerous conditions
- ⚠Should be used alongside other diagnostic tests and clinical evaluation
Risks & Considerations
- ●Minor pain or bruising at the blood draw site
- ●Rare risk of infection or fainting
Interfering Factors
- ●Hemolyzed blood samples
- ●Lipemic samples
- ●Certain medications or treatments
- ●Other benign conditions like liver disease
Compare With Similar Tests
| Test | CA 15.3 Breast Cancer Marker Test | |||||
|---|---|---|---|---|---|---|
| Comparison | CA 15.3 Breast Cancer Marker Test |
Frequently Asked Questions
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