Diagnosis	Cell count	Cell type	Glucose	Protein
Bacterial meningitis	↑↑	Neutrophils	↓	↑↑
Viral meningitis	↑	Lymphocytes	Normal	Normal or ↑
Fungal or tuberculous meningitis	↑	Lymphocytes	↓	↑
HSV encephalitis	↑	Lymphocytes & erythrocytes	Normal	↑
Guillain-Barré syndrome	Normal	Normal	Normal	↑