12. Condition Glucose Protein Cells Acute bacterial meningitis low high high, often > 300/mm³ Acute viral meningitis normal normal or high mononuclear , < 300/mm³ Tuberculous meningitis low high pleocytosis , mixed < 300/mm³ Fungal meningitis low high < 300/mm³ Malignant meningitis low high usually mononuclear