Table 1. Clinical and laboratory findings associated with infectious versus aseptic meningitis^{1 19} .

	Bacterial meningitis	Aseptic meningitis
Symptoms	Meningismus: nuchal rigidity, photophobia, headache, mental status change	Meningismus: nuchal rigidity, photophobia, headache, mental status change
Fever	> 102°F	< 102°F
CSF rhinorrhea	Potentially present	Absent
CSF culture/gram stain	Positive	Negative
CSF lactate	> 35 mg/dL (sensitivity 0.93, specificity 0.99)	< 35 mg/dL
CSF WBC	> 6,000 cells/μL	< 2,000 cells/μL
CSF glucosea	< 20 mg/dL	Normal
CSF protein	Not statistically different	Not statistically different

Abbreviations: CSF, cerebrospinal fluid; WBC, white blood cells.

^aIn nondiabetic patients.