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Test Code G6SW N-Acetylgalactosamine-6-Sulfatase, Leukocytes

Reporting Name

N-Acetylgalactosamine 6 Slft, WBC

Useful For

Preferred test to rule-out mucopolysaccharidosis IVA (Morquio A syndrome)

 

The test is not useful to establish carrier status for Morquio A syndrome.

Method Name

Fluorometric

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Whole Blood ACD


Advisory Information


This test cannot be used to establish carrier status for Morquio A syndrome.



Shipping Instructions


For optimal isolation of leukocytes, it is recommended the specimen arrive within 168 hours (7 days) of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible.



Specimen Required


Container/Tube:

Preferred: Yellow top (ACD solution B)

Acceptable: Yellow top (ACD solution A)

Specimen Volume: 6 mL

Collection Instructions: Do not transfer blood to other containers.


Specimen Minimum Volume

5 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood ACD Refrigerated (preferred) 7 days
  Ambient  7 days

Reject Due To

Hemolysis

Mild OK; Gross reject

Lipemia

NA

Icterus

NA

Other

NA

Reference Values

≥92 nmol/17 hour/mg protein

Day(s) and Time(s) Performed

Varies

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82657

LOINC Code Information

Test ID Test Order Name Order LOINC Value
G6SW N-Acetylgalactosamine 6 Slft, WBC 24096-0

 

Result ID Test Result Name Result LOINC Value
62409 N-Acetylgalactosamine 6 Slft, WBC In Process
35778 Interpretation (G6SW) 59462-2
35777 Reviewed By 18771-6