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Lab Test Dictionary

FISH, ALL, TCF3/PBX1, t(1;19)(q23.3;p13.3) (90511)


Fluorescence in situ Hybridization (FISH)


FISH, ALL, t(1;19)

Specimen Type

Whole Blood or Bone Marrow

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days


Standard TAT

7-8 Days

Collection Information

Specimen Required

3 mL

Container Type

Dark Green (Sodium Heparin)

Collection Instructions

Collect Bone Marrow or whole blood collected in a sodium heparin (dark green-top), sodium heparin (dark blue-top), or sodium heparin (tan-top) tube. Bone marrow collected in transport medium is also acceptable. 5mmx5mm tumor biopsy in transport medium is also acceptable. Clinical history/reason for referral is required with test order. Prior therapy and transplant history should be provided with test order. Specimen viability decreases during transit. Send specimne to testing lab for viability determination. Do not reject.

Processing Information - Lab Use Only

Transport Temperature


Test Volume Required

3 mL

Minimum Test Volume

1 mL

Processing Instructions

Enter clinical info under specimen number before batching. If diagnosis is not provided, print and send clinical history with specimen. Indicate specimen type comments as well.

CPT Codes

88271 (x2), 88275, 88291