Aids in treatment decisions in individuals with solid tumors including colorectal and non-small cell lung cancers. Does not cover extended RAS; detects mutations in KRAS codons 12, 13, and 61 only.
Polymerase Chain Reaction/Pyrosequencing
DNA isolation: Sun-Sat
New York DOH Approval Status
Tumor Tissue: Formalin fix (10 percent neutral buffered formalin) and paraffin embed tissue. Protect from excessive heat. Transport tissue block or 5 unstained 5-micron slides. (Min: 3 slides) Transport block(s) 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.
Room temperature. Also acceptable: Refrigerated. Ship in cooled container during summer months.
Less than 25 percent tumor. Specimens fixed/processed in alternative fixatives (alcohol, Prefer) or heavy metal fixatives (B-4 or B-5). Decalcified specimens.
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.
Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable
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.
Laboratory Developed Test (LDT)
This assay detects mutations in codons 12, 13, and 61.
For billing requirements, KRAS Bill will be added separately. Additional charges apply.
88381; add 81275; 81276
|Component Test Code*||Component Chart Name||LOINC|
|0040249||KRAS Mutation Detection||21702-6|
- anti-EGFR therapy resistance testing
- Cetuximab (Erbitux)
- Codon 12,13
- Codon 61
- KRAS codons 12, 13, 61
- Panitumumab (Vectibix)