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HelpTest ID 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 specimen in original tube. 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.
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Globotriaosylsphingosine, BSpecimen Type
Whole bloodSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole blood | Refrigerated (preferred) | 72 hours | |
| Ambient | 48 hours |
Reference Values
Cutoff: ≤0.034 nmol/mL
Day(s) Performed
Tuesday
Report Available
3 to 9 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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 |