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92074: Calreticulin (CALR) Mutation Analysis Print View
Specimen Source:      
Block ID:      
Clinical Indication:      
CALR Mutation (exon 9): PCR SEQ  Not Detected   
Mutation Site:      
Interpretation:      

PRIMARY
1 Whole Blood EDTA 5 (2) mL   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  
ALTERNATE
  Whole Blood Heparin 5 (2) mL   Refrigerated - 7 Day(s)/Room Temperature - 7 Day(s)  
  Whole Blood (Citrated) 5 (2) mL   Refrigerated - 7 Day(s)/Room Temperature - 7 Day(s)  
  Tissue Paraffin Block   Refrigerated - 12 Month(s)/Room Temperature - 12 Month(s)  
  Bone Marrow Aspirate   Room Temperature - 7 Day(s)/Refrigerated - 7 Day(s)  
  Slides-Formalin Fxd Paraf   Room Temperature - 12 Month(s)/Refrigerated - 12 Month(s)  
  Fixed Cell Pellet   Room Temperature - 12 Month(s)/Refrigerated - 12 Month(s)  

Calreticulin (CALR) mutations have been reported in 50-71% of essential thrombocythemia (ET), and 56-88% of primary myelofibrosis (PMF)that are negative for JAK2 and MPL mutations. ET and PMF with CALR mutations are associated with distinct clinical features and can have superior outcome to MPL-mutated and JAK2-mutated ET and PMF in initial studies. Testing for this mutation can assist in the diagnosis of myeloproliferative neoplasms, and provide a marker for monitoring response to therapy and disease recurrence.
Setup Schedule
Monday, Wednesday, Friday

Reported (Analytical Time)
5 days

CPT Code
81479

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
Reject Criteria: Gross hemolysis Transport Temperature: Room temperature Acceptable: 10 slides (4 slide minimum) of formalin fixed, paraffin-embedded tissue






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