Laboratory Medicine
Test Directory / CSF Glucose
CSF Glucose
Fluoride Oxalate
| Test | CSF Glucose |
|---|---|
| Common Abbreviations | NA |
| Profile | NA |
| Tube type | fluoride EDTA |
| Clinical Indication | CSF glucose is normally 60% lower than blood levels. Glucose can be measured in cerebrospinal fluid as an adjunct to the diagnosis of meningitis. Glucose levels below 1 mmol/L are strongly suggestive of bacterial meningitis and levels are typically normal in viral meningitis. Other causes of low CSF glucose are other CNS infections, sarcoidosis, malignnacy and SAH. |
| Specimen Type | CSF |
| Sample type | CSF |
| Minimum Volume | 200µl |
| Special Precautions | Specimens received in plain universal tubes should be rapidly transferred into Fluoride Oxalate tubes |
| Stability | 3 days at 4-8C |
| Turnaround Time | Urgent: 2 hours Inpatient: 4 hours Outpatient/ GP: 24 hours |
| Laboratory | York and Scarborough |
| Reference Interval | 3.3-4.5 mmol/L Age <2yrs 2.2-3.9 mmol/L Age >2yrs |
| Limitations | In very rare cases gammopathy, especially monoclonal IgM (Waldenströms macroglobulinemia), may cause unreliable results. |
| Notes |
