Arylsulfatase A, Urine




Test Mnemonic

UARYLS

CPT Codes

  • 84311 - QTY (1)

LOINC ®

42726-0

Aliases

  • Arylsulfatase, Urine

Includes

  • Arylsulfatase A

Performing Laboratory

Mayo Clinic Dpt of Lab Med & Pathology


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
10 mLUrine, 24-hour (well-mixed)Clean containerRefrigerate during collection.Refrigerated 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
5 mL     

Stability

Environmental Condition Description
Refrigerated14 days
AmbientUnacceptable
FrozenUnacceptable

Days Performed

Processed Monday, Performed Tuesday

Turnaround Time

10 - 17 days

Methodology

Name Description
Colorimetric, Kinetic 

Reference Range

Arylsulfatase A, Urine
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal>=19nmol/h/mL

Special Info

Informed consent is required for patients residing in New York state. Specimen must be received 1 day prior to assay day for processing. Frozen or ambient samples or samples with preservatives are unacceptable. Indicate total volume on requisition.

Clinical Info

Screening test for metachromatic leukodystrophy. Leukocytes are the preferred screening specimen for metachromatic leukodystrophy. Due to the use of artificial substrate, this test does not reliably pick up carriers.