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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.
Reporting Name
Globotriaosylsphingosine, BUseful For
Screening of patients with Fabry disease when a serum specimen is not available
This test should not be used for newborn screening followup.
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Whole bloodOrdering 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.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Refrigerated (preferred) | 72 hours |
| Ambient | 48 hours |
Reference Values
Cutoff: ≤0.034 nmol/mL
Day(s) Performed
Tuesday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.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 |