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HelpTest Code LGBWB Globotriaosylsphingosine, Blood
Test Down Notes
Effective September 21, 2023: This test is temporarily unavailable due to analytic issues. The downtime is expected to be >30 days. Order LGB3S as an alternative. See test notification here.
Ordering Guidance
Serum is the recommended specimen type for diagnosing and monitoring patients with Fabry disease. For more information see LGB3S / Globotriaosylsphingosine, Serum.
Specimen Required
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Green top (sodium heparin, lithium heparin) and yellow top (ACD B)
Specimen Volume: 1 mL
Collection Instructions: Send whole blood in original vial. Do not aliquot.
Forms
Useful For
Screening of patients with Fabry disease when a serum specimen is not available
This test should not be used for newborn screening followup.
Reporting Name
Globotriaosylsphingosine, BSpecimen Type
Whole bloodSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Refrigerated (preferred) | 72 hours |
| Ambient | 48 hours |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
Cutoff: ≤0.034 nmol/mL
Day(s) Performed
Tuesday
Report Available
3 to 9 daysSpecimen Retention Time
Whole blood: 7 days; Dried Blood Spot: Normal results: 2 months; Abnormal result: IndefinitelyPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82542
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LGBWB | Globotriaosylsphingosine, B | 92753-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| BA4371 | Interpretation (LGBWB) | 59462-2 |
| BA4370 | Globotriaosylsphingosine | 92753-3 |
| BA4372 | Reviewed By | 18771-6 |