Methodology
Fluorescence in situ Hybridization (FISH)
Synonyms
Sex Chromosome Abnormalities; Turner Syndrome; Sex Reversal; Sex Determining Region; Y; TDF
Specimen Type
Whole Blood
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB4182
Lab Test Days
Daily
Standard TAT
5-7 Days
Collection Information
Specimen Required
2-5 mL Whole Blood (2-3 mL Whole Blood for infants)
Container Type
Dark Green (Sodium Heparin)
Processing Information - Lab Use Only
Transport Temperature
Ambient-Only
Specimen Stability
Frozen: Unacceptable
Rejection Criteria
Received frozen
Test Volume Required
5 mL Whole Blood (3 mL Whole Blood for infants)
Minimum Test Volume
2 mL Whole Blood (2 mL Whole Blood for infants)
Comments
Insurance authorization required prior to draw for outpatients. Ok to send on inpatients. This is the preferred test for Turner Syndrome because it looks at 100 to 200 cells.
CPT Codes
88271 (x2), 88273
Revised
07-28-21
Initials
DM