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HelpTest Code SORDB Sorbitol and Xylitol, Quantitative, Whole Blood
Ordering Guidance
This is a test for diagnosis and treatment monitoring for sorbitol dehydrogenase deficiency-related peripheral neuropathy.
Necessary Information
Biochemical Genetics Patient Information (T602) is recommended, but not required, to be filled out and sent with the specimen to aid in the interpretation of test results.
Specimen Required
Patient Preparation:
Fasting: 8 hours, required
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Green top (sodium heparin)
Specimen Volume: 1 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Freeze whole blood specimens in the original tube. Frozen aliquots from well-mixed specimens are also acceptable.
3. Send frozen.
Forms
Biochemical Genetics Patient Information (T602) is recommended, but not required, to be filled out and sent with the specimen to aid in the interpretation of test results.
Method Name
Gas Chromatography Mass Spectrometry (GC-MS) Stable Isotope Dilution Analysis
Specimen Type
Whole bloodSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Frozen (preferred) | 90 days |
| Refrigerated | 31 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Day(s) Performed
Friday
Performing Laboratory
Mayo Clinic Laboratories in Rochester