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 mL | Urine, 24-hour (well-mixed) | Clean container | Refrigerate during collection. | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | 14 days |
| Ambient | Unacceptable |
| Frozen | Unacceptable |
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 |
| Years | 99 Years | Normal | >=19 | nmol/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.