Elevated WBCs
Lymphocytes
Normal glucose
Moderate protein elevation
Lactate less than 25mg/dL
Viral meningitis
Elevated WBCs
Lymphocytes and monocytes
Decreased glucose
Moderate-to-marked protein elevation
Lactate >25 mg/dL
Tubercular meningitis
Elevated WBCs
Lymphocytes and monocytes
Normal to decreased glucose
Moderate-to-marked protein elevation
Lactate >25 mg/dL
Fungal meningitis
Elevated WBCs
Neutrophils
Markedly decreased glucose
Marked protein elevation
Lactate >35 mg/dL
Bacterial meningitis