Sex chromosome analysis | FISH

Test Details Detects deletion of SRY and sex chromosome aneuploidy
Methodology Fluorescence in-situ hybridization
Performed Monday – Saturday
Turnaround 3 – 5 days
Specimen requirements Peripheral blood (PB)
Sample collection In sterile 15 mL sodium heparin (green-top) vacutainer tube, Infants: 1-2mL, Children: 3-5mL, Adults: 5-10 mL; invert tube immediately after collection to prevent clots.
Minimum sample volume 1mL
Storage/Transport Conditions Room temperature
Unacceptable Conditions Frozen specimens, clotted or hemolyzed specimens, inappropriate tube type
Special Instructions Refrigerate if sample cannot be delivered within 24 hours; Send to Rapid Response or SLCH Central Receiving
CPT Code(s) 88291×1, 88230×1, 88271×3, 88275×2