Test Name:
CALR Mutation Analysis
CPT Code:
81219
Turn Around Time:
24 – 72 hours
Clinical Application:
Detection of insertion / deletion mutations in exon 9 of the CALR (calreticulin) gene.
Please note that additional deep sequencing testing is performed for identified variants that are not the common type I or type II mutations.
Diagnosis and Monitoring. Please note that for sensitive monitoring purposes, deep sequencing (NGS MPN panel) is required.
Methodology:
PCR, fragment length analysis. LoD: 1-10%
Specimen Requirements:
DNA-based assays
Peripheral Blood: Minimum 2 mL in EDTA (purple top) preferred or 2 mL in sodium heparin (green top)
Bone Marrow: Minimum 1 mL in EDTA (purple top) preferred or 1 mL in sodium heparin (green top)
Paraffin Sections: Minimum of 5 sections at 3 microns each
Note: FFPE bone marrow biopsies can result in inadequate DNA due to decalcification (clots sections preferable).
FFPE for Dermatology-related specimens are not accepted.
FFPE is not an acceptable sample for NGS-based assays.
Storage and Transportation:
Please store and ship specimens at ambient temperatures.
Please refer to our full specimen requirements at Hematologics/Specimen Requirements for additional information and for directions on the storage and shipping of extracted DNA or RNA.