Cytogenetics, Constitutional - Blood

Source	Blood
Mnemonic	MISCCGL
Specimen Requirements	Newborn - 6 months: 1-2 mL dark green top SODIUM heparin whole blood for chromosomes/karyotype only. For chromosomes PLUS EITHER Breakage Studies or FISH minimum 2 -3 mL Children: 3 mL dark green top SODIUM heparin whole blood for chromosomes only; 5 mL for Breakage Studies or FISH Adult: 5-7 mL dark green top SODIUM heparin whole blood for chromosomes only; minimum 5 mL for Breakage Studies or FISH NOTE: Breakage Studies and FISH cannot be processed with less than 2 mL of whole blood.
Specimen Handling	DO NOT centrifuge or separate specimen; keep at room temperature. PSC: Transport specimen at room temperature immediately to DSC. RRL: Transport at room temperature immediately to ACH. Blood collected outside of regular hours 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. Regular hours: Monday - Friday, 8:00 am - 4:15 pm For urgent in-patient requests, contact the Medical Geneticist on call.
Additional Information	The physician must complete a CHR “Requisition for Constitutional Cytogenetic and FISH Services” (form# 101667). For information or to obtain requisition, phone 403-955-7375.
Testing Location	ACH Cytogenetics Lab
Testing Frequency
Alternate Name(s)
Reference Interval

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