Specimen Collection Guide – Microarray/Array CGH

A minimum of 3mL (1mL for newborns) peripheral blood in a sterile, EDTA vacutainer should be sent directly to the Genetics Laboratory at Credit Valley Hospital. If <3mL is collected, it must be in a 3mL vacutainer to allow for appropriate sample to anticoagulant ratio.

Fibroblast cell culture requires 2 x T25 (50 mL) confluent flasks at room temperature.
All specimens should be collected and shipped at room temperature (15-25ºC). Avoid collecting and/or shipping specimens on Thursdays and Fridays. Do not spin, freeze, heat, open or separate sample (must maintain sterility). Any questions or concerns should be directed through the Genetics Laboratory at Credit Valley Hospital.

Credit Valley Hospital
GENETICS LABORATORY
2200 Eglinton Ave. W., Rm 2H144
Mississauga, ON
L5M 2N1

Tel: (905) 813-1100 ext. 6288
Fax: (905) 813-3854

You must log into the Credit Valley Hospital Website for the Array CGH Test Requisition:
http://www.cvh.on.ca/genetics/requisitions.php

Username: cvhmicroarray
Password: microarray2011

This requisition must be printed, filled out and accompany the sample to the laboratory.

Clinical indicators for testing:
Developmental delay or mental retardation
Developmental delay or mental retardation in addition to clinical features
Two or more congenital anomalies

For more information, please see “Use of array genomic hybridization technology for constitutional genetic diagnosis in Canada. CCMG Position Statement (Clinical)” – 19 Mar 2010 (http://www.ccmg-ccgm.org/pdf/policy/2010/%2827%29%20CCMG_PosStmt_CLIN_aCGH_19Mar2010.pdf)

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