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92475: Calreticulin (CALR) Mutation Analysis Print View
Clinical Indication:      
Specimen Source:      
Block/Specimen ID:      
CALR Exon 9 Mutation      
Gene      
Amino Acid      
Mutation Frequency      
Mutation Type      
Exon      
Nucleotide Change      
Reference      
Interpretation      
Assay Details      

PRIMARY
1 Whole Blood EDTA 5 (1) mL   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  
ALTERNATE
  Whole Blood Heparin 5 (1) mL   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  
  BM Aspirate in EDTA   Refrigerated - 7 Day(s)/Room Temperature - 7 Day(s)  
  Bone Marrow Heparinized   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  
  Fixed Cell Pellet   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  

This DNA-based assay tests leukocytes from blood or bone marrow aspirate for mutations in exon 9 of calreticulin (CALR), using an advanced DNA sequencing method. Frameshift mutations in this region of CALR are associated with myeloproliferative neoplasms, particularly essential thrombocythemia and primary myelofibrosis.
Setup Schedule
Sunday-Saturday

Reported (Analytical Time)
5 days

CPT Code
81219

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.

Notes
Specimen Requirements:
Preferred:
5 mL (1 mL minimum) whole blood or 1 mL (0.5 mL minimum) bone marrow aspirate collected in an EDTA (lavender-top) tube
Acceptable:
Whole blood or bone marrow aspirate collected in a sodium heparin (green-top) tube
Cell Pellets: Send fixed samples within 7 days of fixation date in a plastic, leak-proof tube/container. Indicate type of fixative used along with patient name, specimen source, date collected, and date harvested/fixed. Cell pellets submitted in Carnoy's or other alcohol-based fixatives are acceptable. Do not reject specimens, send to laboratory for screening.
Transport Temperature: Room temperature
Specimen Stability:
Whole blood and bone marrow aspirate:
Room temperature and Refrigerated: 7 days
Frozen: Unacceptable
Cell pellets:
Room temperature and Refrigerated: 7 days
Frozen: Unacceptable
Methodology: Polymerase Chain Reaction-based DNA Sequencing






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