You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.
Turn on more accessible mode
Turn off more accessible mode
Skip Ribbon Commands
Skip to main content
To navigate through the Ribbon, use standard browser navigation keys. To skip between groups, use Ctrl+LEFT or Ctrl+RIGHT. To jump to the first Ribbon tab use Ctrl+[. To jump to the last selected command use Ctrl+]. To activate a command, use Enter.
This page location is:
Tab 1 of 2.
Tab 2 of 2.
Top Link Bar
Point of Care Testing
Pathology Lab Manual
All Site Content
Metachromatic Leukodystrophy (MLD), Arylsulfatase A
10.0 mL blood
Volume and Container
10.0 mL yellow top ACD blood tube
Storage and Transport
ACD whole blood stored refrigerated until ready for transport to Mayo Medical Laboratory Rochester
Causes for Rejection
Specimens other than ACD whole blood, collection beyond 48 hours of draw, gross hemolysis, warm/cold blood
Turn Around Time
5-10 business days from time of collection
Monday-Thursday ONLY from 8 am-4 pm, except observed holidays
CPT / HCPCS Code
Preferred test to rule-out metachromatic leukodystrophy
Mayo Medical Laboratory Rochester
Test performed Thursday at Mayo Medical Laboratory Rochester
Colorimetric Enzyme Assay
Specimen must arrive within 48 hours of draw to be stabilized. Draw specimen Monday-Thursday ONLY and not the day before a recognized holiday (ie July 4, Christmas, New Year's, etc)
See reference lab report
Limitations and Contraindications
This test is not reliable in identifying carriers due both to analytical variation and unusual genetic variants.
Carriers or persons with a pseudogene may yield low results but are unaffected with MLD
CPOE Test Name
Ref Misc Referral Lab Test, type Arylsulf A in Test Name REF
Created at 9/8/2014 5:57 PM by Bradshaw, Keir
Last modified at 9/8/2014 5:57 PM by Bradshaw, Keir
Use this page to add attachments to an item.