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. |
| 10-18 days | |||||
| ZUARY | |||||
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