Laboratory Test Information Guide

Details for Microarray

Test Name: Microarray
Alternate Name(s): Micro array
Array comparative genomic hybridization
Array CGH
Laboratory: Cytogenetics (VH)
Specimen Type: -Peripheral Blood in EDTA: 3 mL minimum (1 mL minimum for newborns)
-Fibroblast Cell Culture: 2 x T25 confluent flasks at room temperature
-Extracted DNA: 2ug total (min. 70 ng/uL)

Follow-Up Testing :
1) Q-PCR or Targeted Microarray - EDTA (1-3mL)
2) FISH or Chromosome Analysis NaHep (1-3mL)
Collection Information: All blood specimens should be collected at room temperature (15-250C) and sent to laboratory within 24 hours of collection.
Do not freeze, heat, spin, open or separate.
Lithium heparin and sodium heparin samples are not acceptable.

All specimens must contain at least two patient identifiers.
Requisition:  MICROARRAY REQUISITION(must include patient's name, address, Ontario Health Insurance Number, PIN (if applicable), originating location, Dr's full name and address, and all pertinent clinical information. The requisition must be printed, filled out and accompany sample to the lab.
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
4-6 weeks (excludes confirmation testing)
Reference Range: See report
Effective Date: 2011-03-16
Revised Date: 2018-06-01
Critical Value:  
Interpretive Comments:  
Special Processing:  
Comments: For additional information please refer to the Molecular Diagnostics Laboratory
Method of Analysis: DNA Extraction
CytoScan HD Microarray
Critical Information Required: Reason for testing:
-Developmental delay or mental retardation
-Developmental delay or mental retardation in addition to the following clinical features (list)
-Two or more congenital anomalies (list)
Storage & Shipment: Room temperature
Deliver to lab same day.

If unable to transport immediately, store at 4oC and transport at room temperature (15-25oC) within 24 hours.
System Codes: 
Referred To:  

Questions? Comments? Contact Laura Gopaul