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Genetic Labs

Houston, Texas

Genetic Laboratory
Medical Genetics Laboratories
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Medical Genetics Test Details

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KRAS Mutation Analysis - Tumor
Test Information: Indication for Study:

Identification of mutations in codon 12, 13, and 61 of the KRAS gene.
Test Details
Test Code: 9126
Special Notes: This test can also be performed on Fresh Frozen Tissue, Bone Marrow, and Leukemic Blood (#9125).

KRAS is commonly mutated and thereby activated in various human cancers, including lung adenocarcinoma, mucinous adenoma, ductal carcinoma of the pancreas, and colorectal carcinoma. The most common mutations of KRAS are concentrated at codons 12 and 13 (>90%) and less common codon 61 (~5-7%). These mutations render tumors resistant to various anti-cancer therapies.

DNA is extracted and subjected to real-time allelic-specific PCR analysis of KRAS gene that includes codons 12, 13, and 61 (mRNA reference sequence: NM_004985.3).

Technical Limitations:
This test is designed to detect mutations in codons 12, 13, and 61 of the KRAS gene only. The limit of the test is approximately 5 mutated cells per 100 total cells (5%).

Useful Links:
- NCCN
- ASCO
- The Role of KRAS Mutation Testing in the Management of Colorectal Cancer
Technical Information
Methodology: Real-Time PCR
Gene Name: KRAS
Protein Name: GTPase KRas
Test Type: Mutation Analysis
Sample & Shipping Information
Test Requisition: Tumor Analysis
Specimen Type: FFPE - Slide(s)
Requirements: 10 unstained 5um FFPE slides containing adequate amounts of tumor to be analyzed with areas of tumor marked. Please include a copy of corresponding surgical pathology report.

Transport Temperature: sent at ambient temperature (18-25C/64-77F). Protect paraffin tissue from excessive heat. Ship in cooled container during summer months.

Unacceptable Conditions: No tumor in tissue. Frozen specimens and specimens fixed/processed in alternative fixatives.

Stability: Ambient: Indefinitely; Refrigerated: Acceptable.
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Do not heat or freeze.


Specimen Type: FFPE - Tumor Block
Requirements: Paraffin-embedded, formalin-fixed tissue block containing adequate amounts of tumor to be analyzed with areas of tumor marked. Please include a copy of corresponding surgical pathology report.

Transport Temperature: sent at ambient temperature (18-25C/64-77F). Protect paraffin tissue from excessive heat. Ship in cooled container during summer months.

Unacceptable Conditions: No tumor in tissue. Frozen specimens and specimens fixed/processed in alternative fixatives.

Stability: Ambient: Indefinitely; Refrigerated: Acceptable.
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Do not heat or freeze.


Turn Around Time: 5 - 7 days
Billing Information
List Price: *For Insurance or Institutional Prices, please call.
CPT Codes: 81275 x 1, 81403 x 1


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