Objectives: To evaluate the efficacy of serum CRP level differentiating between bacterial and aseptic meningitis in Thai patients.
Material and Method: The authors measured the serum CRP level in patients who were diagnosed clinically as bacterial and aseptic meningitis.
Results: The authors evaluated 32 subjects; 12 with bacterial meningitis (all males) and 20 with aseptic meningitis (13 males; 7 females). The mean serum CRP level in the bacterial meningitis and aseptic meningitis group was 209.25 + 105.34 (range, 65 to 420) and 67.05 + 40.81 (range, 10 to 169) mg/L, respectively (p < 0.001).
Conclusions: serum CRP can help differentiate between bacterial and aseptic meningitis.

Keyword: Serum CRP, Bacterial meningitis, Aseptic meningitis