Test Details
Mnemonic
ZUARY
Ordering Code
3500460
CPT-4 Code(s)
84311
Specimen Information
Collect
24 hour urine (refrigerate during collection)
Specimen Preparation
Send 6.0 mL urine refrigerated in a screw capped plastic vial with total volume indicated on container.
Minimum Volume
2.5mL
Transport Temperature
Refrigerated
Rejection Criteria
Preserved urines
Stability
Room temperature: Unacceptable
Refrigerated: 14 days
Frozen: Unacceptable
Refrigerated: 14 days
Frozen: Unacceptable
Methodology
Colorimetric, Enzyme Assay
Reference Range
≥19 nmol/h/mL
Interpretation: Greatly reduced levels of
arylsulfatase A in urine (≤15 nmol/h/mL), as well
as in serum and various tissues, is seen in
patients with metachromatic leukodystrophy.
This test is not suitable for carrier detection.
Interpretation: Greatly reduced levels of
arylsulfatase A in urine (≤15 nmol/h/mL), as well
as in serum and various tissues, is seen in
patients with metachromatic leukodystrophy.
This test is not suitable for carrier detection.
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
Yes