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Constitutional Cytogenetics - Blood

Referred out for testing

Source Blood
Mnemonic CGLBL

Specimen Requirements

Newborn - 6 months: 
1-2 mL dark green top SODIUM heparin whole blood.
For Rapid Aneuploidy Screen or RAD or Trisomy, refer to Rapid Aneuploidy Detection.

Children and Adults: 
3-4 mL dark green top SODIUM heparin whole blood.

For microarray testing, refer to Chromosomal Microarray Analysis (CMS).

Specimen Handling

DO NOT centrifuge or separate specimen; store and transport at room temperature. 
Transport specimen, along with a copy of "Requisition for Constitutional Cytogenetics and Fish Services" or copy of one original requisition.

PSC:
Transport specimen at room temperature to DSC.

RRL:
Transport specimen at room temperature to ACH.

Blood collected outside of regular hours (regular hours are Monday - Friday, 08:00 - 16:15) will be stored at room temperature in ACH Chemistry or in DSC Referrals.  Samples stored over the weekend in DSC Referrals will be forwarded to ACH Cytogenetics Lab on Monday morning.

For urgent inpatient requests, contact the Medical Geneticist on call.

Additional Information

The physician must complete an AHS “Requisition for Constitutional Cytogenetic Services - Karyotype, FISH and RAD” available at www.albertahealthservices.ca/lab/page8667.aspx

Testing Location ACH Cytogenetics Lab
Testing Frequency  
Alternate Name(s)
Reference Interval