FISH FOR DIGEORGE / VELOCARDIOFACIAL MICRODELETION (22q11)

Synonyms: 22q11; DiGeorge; VCF
Computer Code: (FISHA)
Specimen Collection: Sodium heparin (green top) tube. Child 2-5 mL whole blood. Adult 5-10 mL whole blood. Recommended that Chromosome studies be performed simultaneously
Minimum Volume: No min. Lab will attempt on any amount.
Handling Instructions for Offsite Areas: Refrigerate specimen.
Reference Values: See reference laboratory report.
Lab Code: Send Out
Requisition: INPATIENT CYTOGENETIC REQUISITION
Test Frequency: NA
Routine TAT: 2-7 days at reference lab after cell culture and/or chromosome analysis are complete
Stat TAT: N/A
CPT Code(s): 88271, 88273
LCD or NCD:
Methodology Used:
See Addendum XVII