NRAS Mutation Detection by Pyrosequencing

2003123
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Additional Technical Information

Ordering Recommendation

Aids in treatment decisions in individuals with solid tumors including melanoma and colorectal cancer. Does not cover extended RAS; detects mutations in NRAS codons 12, 13, and 61 only.

Mnemonic

NRAS

Methodology

Polymerase Chain Reaction/Pyrosequencing

Performed

DNA isolation: Sun-Sat
Assay: Varies

Reported

7-12 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Tumor tissue.

Specimen Preparation

Tumor Tissue: Formalin fix (10 percent neutral buffered formalin) and paraffin embed tissue. Protect from excessive heat. Tissue block will be returned after testing. Transport tissue block or 5 unstained 5 micron slides. (Min: 3 slides). Transport block and/or slide(s) in a tissue transport kit (ARUP Supply # 47808) available online through eSupply using ARUP Connect™or contact ARUP Client Services at (800) 522-2787.

Storage/Transport Temperature

Room temperature. Also acceptable: Refrigerated. Ship in cooled container during summer months.

Unacceptable Conditions

Less than 25 percent tumor. DNA extracted by a non-CLIA lab. DNA extracted without a corresponding circled H&E slide. Specimens fixed/processed in alternative fixatives (alcohol, Prefer) or heavy metal fixatives (B-4 or B-5). Decalcified specimens.

Remarks

Include surgical pathology report.
If multiple specimens (blocks or slides) are sent to ARUP, they must be accompanied by one of the following: an order comment indicating that the ARUP pathologist should choose the specimen most appropriate for testing (e.g., "Choose best block"), or individual orders for each sample submitted. A Pathologist Block Selection Fee (ARUP test code 3002076) will be added to orders that utilize the first option. If multiple specimens are sent to ARUP without a request for pathologist block/slide selection or individual orders, they will be held until clarification is provided.

Stability

Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable

Reference Interval

Interpretive Data

Refer to report.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

This assay detects mutations in codons 12, 13, and 61.
For billing requirements, NRAS Bill will be added separately. Additional charges apply.

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
11/15/2021
X
X
X
N/A

CPT Codes

88381; add 81311

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Components

Component Test Code* Component Chart Name LOINC
2002148 Block ID 57723-9
2003124 NRAS Mutation Detection, Pyrosequencing 21719-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Anti-EGFR therapy resistance
  • Codon 12,13
  • Codon 61
  • N-RAS
  • RAS Mutation Analysis, Thyroid Cancer
NRAS Mutation Detection by Pyrosequencing