|Test||ARYLSULFATASE A, 24-HOUR URINE|
|Description||Useful for detection of metachromatic leukodystrophy and as a secondary specimen for metachromatic leukodystrophy. The preferred initial specimen in leukocytes.|
|Specimen||SPECIMEN MUST BE RECEIVED 1 DAY PRIOR TO ASSAY DAY FOR PROCESSING.
10 mL (minimum: 5.0 mL) from a 24-hour urine collection container. No preservative. See "Urine Preservatives" for multiple collections. Refrigerate specimen during collection. Send specimen refrigerated in a 13-mL urine tube.
|Reference Values||> 1 U/L
NOTE: Results from this assay may not reflect carrier status because of individual variation of arylsulfatase A enzyme levels.
|Analytic Time||2 Days|
|Day(s) Test Set Up||Monday, Thursday|