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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. Collect specimen Monday through Thursday only and not the day before a holiday. Specimen should be collected and packaged as close to shipping time as possible.
Necessary Information
Provide a reason for referral 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 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 |