

ARYLSULFATASE A
Specimen Required
Rejection Criteria
Methodology
Stability
Reference Range
Performed
Collect 24 hour urine, refrigerate during collection. Send 10.0 mL urine (5.0 mL minimum) refrigerated in a screw-capped plastic vial. Record total volume on test requisition and specimen label. |
Rejection Criteria
Preserved urines |
Methodology
Colorimetry, kinetic |
Stability
Room Temperature: Unacceptable; Refrigerated: 14 days; Frozen: Unacceptable |
Reference Range
>=19 nmol/h/mL | |||
Interpretation: Greatly reduced levels of arylsulfatase A in urine (< or = 15 nmol/h/mL), as well as in serum and various tissues, is seen in patients with metachromatic leukodystrophy. |
Performed
Specimens are processed on Wednesday. Assay is performed on Thursday. |
Turnaround Time | 10-18 days | ||||
Test Code | ZUARY | ||||
CPT-4 Code (s) |
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LOINC Codes |
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