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Test Name:
Williams Syndrome, by FISH
- SBMF No:
45120 - Performance Lab Name:
Parkview Health Laboratories - Test Mnemonic:
WILLIAMS - ABN:
Required – Not FDA-Approved - CPT Code:
88271; 88273 - LOINC Code:
19146-0 - Ref Lab Test No:
GWILP - Also Known As:
Deletion 7q11.23 - Spec Type:
Whole blood - Spec Container:
Green top (sodium heparin) tube - Pref Vol:
5.0 mL - Min Vol:
3.0 mL - Fasting:
No - Patient Prep:
If patient has had a recent chromosome analysis, contact SBMF Client Services to determine if FISH study can be done with existing sample - Spec Collect:
Routine venipuncture - Spec Process:
Do not centrifuge
Do not remove plasma from cells - Spec Store Transport:
Room temperature - Spec Stability:
24 hours room temperature (20-30°C) - Spec Reject:
Sample collected in lithium heparin tube - Methodology:
Fluorescent In Situ Hybridization (FISH) - Use:
Rule out Williams Syndrome - Clinical Significance:
The patient's cells are studied by DNA PROBE. Normal results rule out most cases of Williams Syndrome. This test does not confirm the presence or absence of a probe/gene not yet produced or discovered in direct or indirect correlation to this syndrome or abnormality. - Reference Range:
By report - Additional Test Info:
This test was developed and its performance characteristics determined by Parkview Hospital Cytogenetics. It has not been cleared or approved by the FDA. The FDA has determined that such clearance or approval is not necessary. This test is used for clinical purposes. This Laboratory is certified under CLIA to perform high complexity testing. - Day Run:
Mon-Fri - Time Reported:
Within 10 days - Test Type:
GENETIC
