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Test Name

KRAS and NRAS Mutation Analysis, Cell-based

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

CPT Code(s)**

81311, 81275, 81276
**IMPORTANT: CPT Code is informational only; obtain the Test Code for ordering.

Methodology

Polymerase Chain Reaction (PCR) • Sequencing

Reference Range(s)

KRAS Mutation, Cell-based Not detected
NRAS Mutation, Cell-based Not detected

Clinical Significance

Recent studies have shown that mutations in KRAS and NRAS exons 2, 3, and 4 have influence on response to anti-EGFR therapy. Testing these genes will aid in selection of patients who will likely respond to anti-EGFR therapy.

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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KRAS and NRAS Mutation Analysis, Cell-based
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