Sex chromosome analysis | FISH

Test DetailsDetects deletion of SRY and sex chromosome aneuploidy
MethodologyFluorescence in-situ hybridization
PerformedMonday – Saturday
Turnaround3 – 5 days
Specimen requirementsPeripheral blood (PB)
Sample collectionIn 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 volume1mL
Storage/Transport ConditionsRoom temperature
Unacceptable ConditionsFrozen specimens, clotted or hemolyzed specimens, inappropriate tube type
Special InstructionsRefrigerate 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