CHROMOSOME MICROARRAY (CMA) ANALYSIS
test app
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Specimen Type:
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Blood |
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Container/Tube
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BOTH EDTA AND SODIUM HEPARIN SAMPLES ARE
REQUIRED
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Preferred/Acceptable:
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GreenNaHep Vacutainer®.
(DARK green-top no gel Sodium
Heparin tube)
AND
Lavender-top (EDTA) Vacutainer®.
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Collection Volume:
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Infants: 1.0-2.0 mL
Children: 3.0-5.0 mL
Adults: 5.0-10.0 mL
(whole blood in each tube required)
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Patient Preparation:
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None
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Sample Rejection:
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Clotted specimens
Specimens collected in gel tubes.
Mislabeled or unlabeled specimens.
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Special Instructions:
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Immediately invert tubes gently 8-10 times after
collection to ensure proper mixing of blood and anticoagulant (this
will avoid specimen clotting). Forward promptly at ambient temperature
only.
Send the EPIC Cytogenetics order requisition that prints when order released with
specimen.
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Test Availability:
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Daily
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Turnaround Time:
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21-28 days
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Test set-up:
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Monday-Friday
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Lab Testing Section:
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Send-outs
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Referred to:
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Cytogenetics and Molecular Pathology Laboratory at
Washington University
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Reference Range:
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Interpretive report will be
provided
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Critical Values:
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None established
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Limitations:
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NA
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Method Summary:
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Affymetrix Cyto Scan HD assay with genomic DNA extraction
to detect small gains and losses across the entire
genome.
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Lab Processing instructions:
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DO NOT SPIN.
Maintain at room temperature or refrigerate if sample
cannot be delivered within 24 hours
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Processed Volume:
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whole blood in each EDTA and NaHep tube.
Infants: 1.0-2.0 mL
Children: 3.0-5.0 mL
Adults: 5.0-10.0 mL
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Transport Temperature:
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Ambient
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Analyte Stability:
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Ambient: NA
Refrigerated: NA
Frozen: Not acceptable
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Notes:
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Send the EPIC Cytogenetics order requisition with specimen.
Store specimens received over weekend in refrigerator.
Samples should not be more then 48 hours old.
If there are any questions about sample storage/volume,
call WU cytogenetics lab at
314-454-8101.
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EPIC order name:
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Cytogenetics Panel (then select specimen type and answer questions for correct order set)
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Cerner order name:
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NOT orderable in Cerner; only orderable in EPIC as part of an order set
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CPT Codes:
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81229
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LOINC Value:
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NA
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Synonyms:
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Last Updated: 04/22
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Last Reviewed:
08/24
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