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HelpTest Code BGA Beta-Galactosidase, Leukocytes
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Whole Blood ACDShipping Instructions
For optimal isolation of leukocytes, it is recommended the specimen arrive refrigerated within 6 days of collection to be stabilized. Pre-analytical processing is performed Monday through Friday and Sunday. This test may be canceled if specimens are outside of stability when processing occurs. Collect and package specimens for arrival on days when processing is performed.
Necessary Information
Provide a reason for testing with each specimen.
Specimen Required
Container/Tube:
Preferred: Yellow top (ACD solution B)
Acceptable: Yellow top (ACD solution A)
Specimen Volume: 6 mL
Collection Instructions: Send specimen in original tube. Do not aliquot.
Specimen Minimum Volume
5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood ACD | Refrigerated (preferred) | 6 days | YELLOW TOP/ACD |
| Ambient | 6 days | YELLOW TOP/ACD |
Reference Values
≥1.56 nmol/min/mg
Day(s) Performed
Preanalytical processing: Monday through Friday, Sunday
Assay performed: Tuesday
CPT Code Information
82657
Genetics Test Information
Beta-galactosidase enzyme is deficient in the following conditions: GM1 gangliosidosis, Morquio syndrome B, and galactosialidosis.
Careful review of clinical findings will help distinguish between GM1 gangliosidosis and Morquio syndrome type B.
A diagnosis of galactosialidosis must be additionally demonstrated by a deficiency of neuraminidase.
Report Available
2 to 8 daysSpecimen Retention Time
WBC homogenate: 1 monthReject Due To
| Gross hemolysis | Reject |