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Test Code GALCR Galactocerebrosidase Reflex, Leukocytes


Specimen Required


Only orderable as a reflex. For more information see LSD6W / Lysosomal Disorders, Six-Enzyme Panel, Leukocytes.

 

Container/Tube:

Preferred: Yellow top (ACD solution B)

Acceptable: Yellow top (ACD solution A) or lavender top (EDTA)

Specimen Volume: 6 mL

Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.


Useful For

Diagnosis of Krabbe disease as a confirmatory reflex of the six-enzyme panel

 

Follow-up testing for evaluation of an abnormal newborn screening result for Krabbe disease

 

This test is not recommended for carrier detection because of the wide range of enzymatic activities observed in carriers and noncarriers.

Reporting Name

Galactocerebrosidase Reflex, WBC

Specimen Type

Whole Blood ACD

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood ACD Refrigerated (preferred) 6 days
  Ambient  6 days

Reject Due To

Gross hemolysis Reject

Reference Values

Only orderable as a reflex. For more information see LSD6W / Lysosomal Disorders, Six-Enzyme Panel, Leukocytes.

 

≥0.300 nmol/hr/mg protein

Day(s) Performed

Preanalytical processing: Monday through Saturday

Testing performed: Monday, Wednesday

Report Available

4 to 10 days

Specimen Retention Time

White blood cell homogenate: 1 month

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82542

Specimen Minimum Volume

4 mL