c-KIT Mutation Analysis, Cell Based

Test Code
19961


CPT Codes
81272

Preferred Specimen
3 mL whole blood collected in an EDTA (lavender-top) tube or formalin fixed paraffin embedded tissue


Minimum Volume
1 mL


Other Acceptable Specimens
Bone marrow (refrigerated preferred transport) • Cell pellet


Instructions
Whole blood (preferred): Follow standard whole blood collection procedure. Collect 3-5 mL whole blood samples in EDTA tube. Blood samples are shipped at room temperature or 4° C. Do not freeze whole blood. Record the draw time and date on the tube. Ship immediately to maintain sample stability.
Cell pellet: This assay is also designed for the remnant cell pellet from Cytogenetics. The cell pellet usually fixed should be transported at room temperature or refrigerated to the laboratory as soon as possible. Please provide a copy of the Cytogenetics report.


Transport Container
EDTA (lavender-top) tube or formalin fixed paraffin embedded tissue block


Transport Temperature
Room temperature


Specimen Stability
Whole blood and bone marrow
Room temperature: 7 days
Refrigerated: 14 days
Frozen: Unacceptable

Tissue
Room temperature: Indefinite
Refrigerated: Indefinite
Frozen: Do not freeze


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received frozen


Methodology
Next Generation Sequencing

Setup Schedule
Mon, thurs


Report Available
3-4 days


Reference Range
Not detected


Clinical Significance
Activating c-KIT mutations have been indentified in various human cancers. c-KIT exon 8 and 17 mutations have been described in patients with CBF-AMLs and usually confer a poor prognosis with increased relapse rate. c-KIT exon 9, 11, 13, 17 mutations have been reported in nearly 90% GIST patients. The presence mutation usually predict poor survival. c-KIT exon 17 mutation has been reported in patients with systemic mastocytosis.


Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042



Last Updated: November 6, 2024


The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.