Comparative Genomic Hybridization (CGH) with Single Nucleotide Polymorphism (SNP Array) with Limited G-Bands
| Sunquest Code: | CGSNPL | CoPath Code: | CGSNPL |
| Epic Code: | LAB6601 | ||
| Sunquest Code (non-Epic sites): | CGSNPL | ||
| Synonyms: | CGH with SNP with G-Band; Microarray with SNP | ||
| Methodology: | Chromosomal microarray (CMA) with limited chromosome analysis by G-banding | ||
| Turnaround Time: | Results are reported within 7-21 days. | ||
| Special Instructions: | Test request form requires:
A signed informed consent in the patient's medical record is required. The consent should not be sent to the laboratory. The link to the Genetic Testing Consent Form is provided as a convenience for the providers and genetic counselors. See Associated Links. |
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| Associated Links: | |||
Collection Instructions
| Specimen: | Whole blood or bone marrow
For whole blood: BOTH a green (sodium heparin, no gel) tube AND a purple (EDTA) tube or Yellow (ACD) tube must be collected. |
| Optimal Volume: | Blood: 5 mL in green (sodium heparin, no gel) AND 5 mL purple (EDTA) or yellow (ACD) tube.
Bone Marrow: 5 mL aspirate in a dry heparin syringe. |
| Minimum\Peds Volume: | Blood: 3 mL in green (sodium heparin, no gel) AND 3 mL purple (EDTA) or yellow (ACD) tube. Both tubes requred for testing. 1-3 mL for each tube will be accepted for patients with blood draw limitations.
Bone Marrow: 3 mL aspirate in a dry heparin syringe. |
| Container: | Green (sodium heparin, no gel) AND Purple (EDTA) (Dry heparin syringe, Yellow (ACD, Solution A) tube available from laboratory) |
| Collection Instructions: | Collect BOTH 5-10 mL in sodium heparin (green) AND 5-10 mL in purple (EDTA) or yellow (ACD). The yellow ACD is an alternate to the EDTA tube only.
Collect only bone marrow in a dry heparin syringe. |
| Causes for Rejection: | Clotted or frozen sample. |
Processing and Shipping
| Specimen Processing: | Do not process. Store at room temperature. Do not refrigerate or freeze.
Specimens must be received in the Cytogenetics Laboratory Mon-Fri by 5:30 pm; weekends or holidays by 4:30 pm. Specimens received after these cutoffs will be processed the following day. |
| Shipping Instructions: | Ship at room temperature. For optimal testing rsults the specimen must arrive within 24 hours of collection. |
| Test Performed at or Referral Lab | Cytogenetics (UMMC-East Bank) |
Interpretive
| Reference Range: | By report. |
Click HERE to Report test errors or omissions.
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