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CSF glucose test
A CSF glucose test measures the amount of sugar (glucose) in the cerebrospinal fluid (CSF). CSF is a clear fluid that flows in the space surrounding the spinal cord and brain.
Normal Results
The glucose level in the CSF should be 50 to 80 mg/100 mL or 2.77 to 4.44 mmol/L (or greater than 2/3 of the blood sugar level).
Note: Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results. Results can also be affected by your serum glucose level, especially if levels are extreme.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
What Abnormal Results Mean
Abnormal results include higher and lower glucose levels. Abnormal results may be due to:
- High blood sugar (hyperglycemia)
- Infection (bacterial or fungus)
- Inflammation of the central nervous system
- Tumor
Alternative Names
Glucose test - CSF, Cerebrospinal fluid glucose test
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