Ordering Recommendation

Preferred test for the detection of arylsulfatase A deficiency. This test is not suitable for carrier detection.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Yellow (ACD solution B). Also acceptable: Yellow (ACD solution A). Collect Monday-Wednesday only and not the day before a holiday.

Specimen Preparation

Transport 6 mL whole blood in the original tube. (Min: 5 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.

Storage/Transport Temperature

Refrigerated. Also acceptable: Room temperature.

Unacceptable Conditions
Remarks

New York Clients: Informed consent is required. Document on the request form or electronic order that a copy is on file.

Stability

Ambient: 6 days; Refrigerated: 6 days; Frozen: Unacceptable

Methodology

Quantitative Colorimetry

Performed

Varies

Reported

6-12 days

Reference Interval

By Report

Interpretive Data



Compliance Category

Performed by non-ARUP Laboratory

Note

Hotline History

N/A

CPT Codes

82657

Components

Component Test Code* Component Chart Name LOINC
2011059 Arylsulfatase A, Leukocytes, Whole Blood 24078-8
2011060 Arylsulfatase A, Interpretation 59462-2
2011061 Reason for Referral 42349-1
2011062 Reviewed by 18771-6
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • ARSA Deficiency
  • Arylsulfatase A (WBC)
  • Arylsulfatase A Deficiency
  • Metachromatic Leukodystrophy
  • MLD
  • WBC Aryl Sulfatase A
Arylsulfatase A, Leukocytes, Blood

Mayo Clinic Laboratories