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FISH, Wolf-Hirschhorn
Test Code14613
CPT Codes
88271,88273
Includes
If this test is ordered without routine G-band chromosome analysis, a tissue culture charge will be added (CPT code: 88230).
If results are not possible, the test order may be canceled and replaced with a Cytogenetics Communication.
If results are not possible, the test order may be canceled and replaced with a Cytogenetics Communication.
Preferred Specimen
3 mL whole blood collected in a sodium heparin (green-top) tube
Minimum Volume
1 mL
Other Acceptable Specimens
Whole blood collected in: Sodium heparin (royal blue-top) tube or sodium heparin lead-free (tan-top) tube
Instructions
Clinical history and reason for referral are required with test order.
Specimen requirements: Whole blood 3-5 mL collected in a sodium heparin tube.
Specimen viability decreases during transit. Send specimen to testing laboratory for viability determination. Do not freeze. Do not reject.
Specimen requirements: Whole blood 3-5 mL collected in a sodium heparin tube.
Specimen viability decreases during transit. Send specimen to testing laboratory for viability determination. Do not freeze. Do not reject.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: See instructions
Refrigerated: See instructions
Frozen: See instructions
Refrigerated: See instructions
Frozen: See instructions
Methodology
Fluorescence in situ Hybridization (FISH)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon-Sat; Report available: 14 days
Reference Range
See Laboratory Report
Clinical Significance
This test is used to detect deletions of chromosome 4p16.3 (WHS), associated with Wolf Hirschhorn syndrome, using FISH (fluorescence in situ hybridization).
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153