Casandra
Casandra Test Code QD71090Version 1 (DRAFT)
Performing Lab
FISH, Williams
Also known as: Williams Syndrome
Clinical Use
Order TestUse
This test is used to detect microdeletions of chromosome 7q11.23, associated with Williams syndrome, using fluorescence in situ hybridization (FISH).
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Chromosomal / Cytogenetics (FISH)
Biomarkers
Unknown CNV
Copy Number RegionCopy Number
Copy Number Alteration • Categorical (e.g., Positive / Negative / Indeterminate)
Result Turnaround Time
7 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Whole Blood
Volume
5 mL
Minimum Volume
1 mL
Container
sodium heparin (green-top) tube; sodium heparin (royal blue‑top) or sodium heparin lead‑free (tan‑top) tube
Collection Instructions
3‑5 mL whole blood collected in a sodium heparin tube; clinical history and reason for referral required.
Storage Instructions
Do not freeze; specimen viability decreases during transit.
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