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Test ID: CGH
Array Comparative Genomic Hybridization (aCGH), Whole Genome, Constitutional

Specimen Type Describes the specimen type needed for testing

Varies

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Specimens must arrive within 96 hours of draw.

 

A whole blood EDTA and a whole blood sodium heparin specimen, as well as the reason for referral, are required.

 

Specimen Type: Whole blood

Container/Tube: Green top (sodium heparin) and lavender top (EDTA)

Specimen Volume: 3 mL for each tube

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimen in original tubes.

Forms:

1. New York Clients-Informed consent is required. Please document on the request form or electronic order that a copy is on file. An Informed Consent for Genetic Testing (Supply T576) is available in Special Instructions.

2. Cytogenetics-Array CGH Testing Patient Information Sheet (Supply T665) in Special Instructions

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

2 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Hemolysis NA
Lipemia NA
Icterus NA
Other NA

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
VariesAmbient (preferred)
 Refrigerated