Immunohistochemistry Cytokeratin-7 (CK-7) Test
Short Name: CK-7 Test
Also known as: Cytokeratin-7 Immunohistochemistry, CK-7 IHC
Immunohistochemistry Cytokeratin-7 (CK-7) Test test available at DNA Labs India for ₹3,000. Uses Immunohistochemistry on Tumor Tissue samples. Results in Reports typically available within 5-7 days after sample receipt.. 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 purpose of the CK-7 test is to detect cytokeratin-7 expression in tissue samples to aid in the diagnosis and classification of adenocarcinomas, especially when the primary cancer site is unknown, helping guide treatment decisions.
- Test Code
- 982
- Price
- ₹3,000
- Sample Type
- Tumor Tissue
- Result Time
- Reports typically 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 Surgical Resection
Laboratory Analysis
Tissue sample collected via biopsy or surgical procedure by a healthcare professional.
Report Delivery
Sample is shipped at room temperature to the laboratory for processing and analysis.
Timeline: Reports typically available within 5-7 days after sample receipt.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the CK-7 test is to detect cytokeratin-7 expression in tissue samples to aid in the diagnosis and classification of adenocarcinomas, especially when the primary cancer site is unknown, helping guide treatment decisions.
How to Prepare
- Submit tumor tissue in 10% Formal-saline or Formalin fixed paraffin embedded block
- Ship at room temperature
- Include a copy of the histopathology report, site of biopsy, and clinical history
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"CK-7 is essential for identifying adenocarcinomas and determining their primary site, aiding in targeted cancer treatment."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Inadequate sample volume or quality
- Missing clinical history or biopsy site information
- Improper sample fixation or container
Understanding Your Results
Positive for CK-7
Suggests adenocarcinoma origin from CK-7 positive tissues (e.g., lung, breast, ovary)
Negative for CK-7
May indicate adenocarcinoma from CK-7 negative tissues or other cancer types; further testing recommended
Consult an oncologist or pathologist for interpretation of results and to discuss treatment options based on the diagnosis.
Limitations
- ⚠Does not determine cancer stage
- ⚠Results should be interpreted alongside clinical history and other tests
- ⚠May not be specific for a single cancer type
Risks & Considerations
- ●Minimal risks as it is a laboratory test on already collected tissue; no direct patient risks
Interfering Factors
- ●Inadequate tissue fixation
- ●Poor sample quality
- ●Use of improper preservatives
Compare With Similar Tests
| Test | Immunohistochemistry Cytokeratin-7 (CK-7) Test | ||
|---|---|---|---|
| Comparison | Immunohistochemistry Cytokeratin-7 (CK-7) Test |
Frequently Asked Questions
What is the CK-7 test?
What is the cost of the CK-7 test in India?
How is the CK-7 test performed?
What does a positive CK-7 result mean?
What are the indications for the CK-7 test?
Is fasting required for the CK-7 test?
How long does it take to get CK-7 test results?
What sample is needed for the CK-7 test?
Is home collection available for the CK-7 test?
Can the CK-7 test determine the stage of cancer?
What is the difference between CK-7 and CK-20 tests?
How should I prepare for the CK-7 test?
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