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Chromosome Analysis, Blood with reflex to Postnatal ClariSure® Oligo-SNP Array
Test CodeCPBRG
Alias/See Also
18980
CPT Codes
88230, 88262
Includes
If Chromosome analysis is normal, then Chromosomal Microarray, Postnatal, ClariSure® Oligo-SNP will be performed at an additional charge (CPT code(s): 81229)
Preferred Specimen
10 mL whole blood collected in a sodium heparin (green-top) tube
Minimum Volume
5 mL
Other Acceptable Specimens
Whole blood collected in a: sodium heparin (royal blue-top), or sodium heparin lead-free (tan-top) tube
Instructions
Clinical history/reason for referral is required with test order.
Ship at room temperature. Specimen viability decreases during transit. Do not freeze. Do not reject.
Preliminary results available for neonatal specimens three days after receipt.
Ship at room temperature. Specimen viability decreases during transit. Do not freeze. Do not reject.
Preliminary results available for neonatal specimens three days after receipt.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Preferred
Refrigerated: Acceptable
Frozen: Unacceptable
Refrigerated: Acceptable
Frozen: Unacceptable
Methodology
Culture • Karyotype • Microscopy
Reflex: Oligo-SNP Array
Setup Schedule
Set up: Daily; Report available: Chromosome reports 10 days after receipt at the performing laboratory, and array reports 7 days later if needed. Add two (2) additional days for transport.
Reference Range
See Laboratory Report
Clinical Significance
Chromosome analysis can be used to help determine genetic causes of intellectual disability, developmental delay, congenital anomalies, infertility, miscarriage, stillbirth, and ambiguous genitalia. Chromosome analysis does not rule out cryptic or submicroscopic chromosome abnormalities. If this analysis is normal, microarray will be performed for the detection of submicroscopic deletions and duplications and long continuous regions of homozygosity.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Last Updated: June 22, 2023