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Cerebrospinal fluid analysis
| Type of infection | White blood cells | Protein | Glucose |
|---|---|---|---|
| Bacterial meningitis | > 1000/μL | High | Low (less than half of serum) |
| Viral meningitis (viral) | < 500/μL | Normal | Usually normal |
| Tuberculosis | < 500/μL (predominant lymphocyte) | Very high | Low (less than half of serum) |
