Immunohistochemistry Cytokeratin-20 (CK-20) Test
Short Name: CK-20 Test
Also known as: CK-20 Immunohistochemistry, Cytokeratin-20 Test
Immunohistochemistry Cytokeratin-20 (CK-20) Test test available at DNA Labs India for ₹3,500. Uses Immunohistochemistry on Tumor tissue samples. Results in Report available within 5-7 days after sample receipt.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SHAILAJA RAGHUNATH MURDESHWAR
Consultant Physician · Reg: 8052
Last reviewed: September 7, 2026
Overview
To detect CK-20 antigen in tissue samples for diagnosing cancers such as colorectal, bladder, and urothelial carcinoma, and to aid in determining primary site in carcinomas of unknown origin.
- Test Code
- 933
- Price
- ₹3,500
- Sample Type
- Tumor tissue
- Result Time
- Report available within 5-7 days after sample receipt.
- Fasting Required
- No
- Method
- Immunohistochemistry
Sample Collection
Provide a copy of the Histopathology report, Site of biopsy, and Clinical history.
Method: Biopsy or surgery
Laboratory Analysis
Tissue sample collected via biopsy or surgical procedure.
Report Delivery
Sample sent to laboratory in specified container at room temperature.
Timeline: Report available within 5-7 days after sample receipt.
Patient Instructions
About This Test
Who Should Get This Test
To detect CK-20 antigen in tissue samples for diagnosing cancers such as colorectal, bladder, and urothelial carcinoma, and to aid in determining primary site in carcinomas of unknown origin.
How to Prepare
- Submit tumor tissue in 10% Formal-saline OR Formalin fixed paraffin embedded block.
- Ship at room temperature.
- Provide a copy of the Histopathology report, Site of biopsy, and Clinical history.
Doctor's Notes
Reviewed by Dr SHAILAJA RAGHUNATH MURDESHWAR — MBBS, MD (General Medicine) · Reg. No. 8052
"CK-20 is crucial for identifying primary sites in carcinomas of unknown origin, aiding in targeted treatment plans and improving diagnostic accuracy."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
- Inadequate tissue sample
- Improper fixation or labeling
Understanding Your Results
Positive
CK-20 antigen detected, suggestive of cancer cells; consult oncologist for further evaluation.
Negative
No CK-20 antigen detected; does not rule out cancer; correlate with clinical findings.
If you experience symptoms like blood in urine/stool, abdominal pain, or unexplained weight loss, or if test results are positive, consult an oncologist promptly.
Limitations
- ⚠Should be used in conjunction with other tests like CK-7 for accurate diagnosis
- ⚠Not definitive alone for cancer staging
Risks & Considerations
- ●Minimal risks from biopsy, such as infection or bleeding
- ●Rare allergic reactions to fixatives
Interfering Factors
- ●Poor tissue quality
- ●Improper fixation
Frequently Asked Questions
What is the Immunohistochemistry Cytokeratin-20 (CK-20) Test?
Why is the CK-20 test recommended?
How is the CK-20 test performed?
What symptoms might indicate a need for this test?
What is the cost of the CK-20 test in India?
Is home sample collection available for this test?
How long does it take to get CK-20 test results?
What does a positive CK-20 result mean?
What should I do if my CK-20 test is positive?
Are there any risks associated with the biopsy for this test?
Can the CK-20 test be used for all types of cancer?
How accurate is the CK-20 test?
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