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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.
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole blood | Refrigerated (preferred) | 72 hours | |
| Ambient | 48 hours |
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.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Day(s) Performed
Tuesday
Report Available
3 to 9 daysReporting Name
Globotriaosylsphingosine, BReference Values
Cutoff: ≤0.034 nmol/mL
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82542