|Table 3: Lumbar puncture findings1 [3, 9].|
1Other investigations may also be performed on CSF to exclude nonbacterial causes of meningitis depending on the clinical scenario; including India Ink staining or antigen testing for Cryptococcus neoformans, Herpes simplex virus (HSV), cytomegalovirus (CMV) and enterovirus PCR. |
2 Values for paediatric patients >1 month of age; some values vary for neonates .
Neonates: white cell count may be higher (<20 in the form of lymphocytes); normally zero PMNs, however some studies have found up to 5% PMNs in neonates without meningitis.
Neonates: normal protein <100 mg/dL.