Test Method

Molecular

CPT Codes

81479

Test Description

The hotspot regions in both the IDH1 and IDH2 genes are analyzed concurrently via bi-directional sequencing of the exon 4 mutation. IDH1 or IDH2 mutations are detected in approximately 15-20% of acute myeloid leukemia (AML) and >70% grade II or III brain gliomas. Patients with AML and mutations are likely to have aggressive disease, while mutations in gliomas are associated with better prognosis.

Specimen Requirements

  • Bone marrow aspirate: 1-2 mL in EDTA tube (purple top) preferred; ACD (yellow top) acceptable
  • Peripheral blood: 5-10 mL in EDTA tube (purple top) preferred; ACD (yellow top) acceptable
  • Fresh Tissue: Minimum of 250 mg tissue in RPMI transport media
  • Formalin-Fixed Paraffin-Embedded Tissue: 1 H&E slide and 6-8 unstained slides, 5-7 microns of BM clot or tissue fixed with 10% NBF fixative. Please circle tumor for microdissection. alternatively, the FFPE clock of the BM clot can be sent for sectioning in our lab

Storage & Transport

Ship specimen the same day whenever possible, with refrigerated (not frozen) cold pack.

Label all tubes with at least two unique patient identifiers. Slides require one patient identifier. Identifiers include name, DOB, specimen ID# or medical record#.

Turnaround time

5 - 7 days

Level of Service

Global