CA 15-3/Cancer Antigen (CA -15-3)
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CA 15-3/Cancer Antigen (CA -15-3)

Cancer Antigen 15-3 (Breast Cancer Marker)

The Ibn Sina Trust
Praava Health
Dr Lal PathLabs
Omnicare Diagnostic Limited
Thyrocare Bangladesh Ltd
Brac Healthcare
Popular Diagnostic Centre Ltd
JG Healthcare
1120
1400
20% OFF
Sample Type
blood
Fasting Required
No
Description

CA 15-3 is considered a tumor marker because high levels of the antigen may indicate certain cancers, including breast cancer. CA 15-3 tests aren’t used to diagnose cancer, but rather to assess how cancer is responding to treatment. CA 15-3 fluctuations help cancer doctors determine whether a tumor is stable, growing, shrinking or has recurred.

Covid Safety

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Counselling

How our test process works!

Step 1

Sample Collection

Vaccinated Phlebotomists collects from syringe in the barcoded vials

Step 2

Sample Storage

Only vaccinated phelbos are assigned orders

Step 3

High Tech Facility

Lab ingests the sample into processing machines which are 100% automated

Step 4

Accurate Digital Reports

The reports are generated by the processing machines and clinically correlated by doctors

Overview

CA 15-3 is a tumor marker test mainly used to monitor breast cancer progression or response to treatment. It measures the amount of cancer antigen 15-3, a protein released into the blood by breast cancer cells.

Risk assessment

Risk Assessment / Purpose:

  • Helps in monitoring breast cancer treatment effectiveness.

  • Detects recurrence or metastasis of breast cancer.

  • Sometimes used to support diagnosis of other cancers (e.g., ovarian, lung, or pancreatic) though less specific.

Ranges

Normal Range:

  • Typically < 30 U/mL (may vary slightly by lab).

Test result interpretation

Interpretation:

  • High CA 15-3 levels may indicate:

    • Advanced or metastatic breast cancer

    • Other cancers (lung, ovarian, pancreatic, liver)

    • Non-cancerous conditions (liver disease, benign breast disorders, endometriosis)

  • Normal or low levels do not rule out early-stage cancer, as CA 15-3 may remain normal initially.

  • Changes over time are more important than a single result.

 

Sample types

Sample Type:

  • Venous blood sample (serum)

 

Frequently Asked Question