ARUP's Laboratory Test Directory

ALK Gene Rearrangements in NSCLC for Crizotinib Eligibility by FISH : 2006102

Mnemonic: ALK GENE

Methodology: Fluorescence in situ Hybridization
Performed: Varies
Reported: 7-10 days
Specimen Required: Collect: Tumor tissue.

Specimen Preparation: Formalin fix (10 percent neutral buffered formalin) and paraffin embed tumor tissue. Transport tissue block or 4 unstained, consecutively cut, 5-micron thick sections, mounted on positively charged glass slides. (Min: 4 slides) Protect paraffin block and/or slides from excessive heat.

Storage/Transport Temperature: Room temperature. Also acceptable: Refrigerated.

Remarks: Include surgical pathology report with reason for referral. The laboratory will not reject specimens that arrive without a pathology report but will hold the specimen until this information is received.

Stability (collection to initiation of testing): Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable

Reference Interval:
By report
CPT Code(s): 88271 x2,  88274 (25-99),  88291
Cross References: Lung Cancer, ALK (2p23) Rearrangement, FISH, Tissue, Lung Carcinoma, Non-Small Cell Lung Cancer, NSCLC, Soft-FLCA