FISH for 1p36 Tissue

Test Mnemonic


CPT Codes

  • 88377 - QTY (1)


  • Chromosome 1p testing by FISH


  • FISH for 1p36

Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
TwoTissueSlidesAmbient One formalin-fixed, paraffin embedded block containing representative tissue OR unstained 4 μm tissue sections on electrostatically charged slides containing representative tumor. Tissue must be fixed in formalin NOT B5 or PREFER fixative

Days Performed

5 days per week

Turnaround Time

3 - 5 days


Name Description
Fluorescent In-Situ Hybridization (FISH) 

Clinical Info

Interphase FISH analysis utilizing an enumeration probe for the 1p36 region, as well as a probe specific to 1q25, useful in the diagnosis of astrocytomas, oligodendrogliomas, ependymomas, or mixed gliomas. If no cells are available for analysis, no analysis charges will be incurred.