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Arylsulfatase A, Leukocytes
Test Code5216
CPT Codes
82657
Preferred Specimen
6 mL whole blood collected in ACD solution (yellow-top) tube
Minimum Volume
5 mL
Instructions
Note: New York clients - an Informed Consent is required. Please document on the request form or electronic order that a copy is on file
Specimen must arrive within 96 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible. Do not transfer blood to other containers.
Specimen must arrive within 96 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible. Do not transfer blood to other containers.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 96 hours
Refrigerated: 96 hours
Frozen: Unacceptable
Refrigerated: 96 hours
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Colorimetric Enzyme Assay
Setup Schedule
Friday Morning Report available: 8 Days
Reference Range
≥62 nmol/h/mg
Clinical Significance
Preferred test for detection of metachromatic leukodystrophy.
