Fig. 4

Correlation analysis of CSF and serum NGAL and other traditional markers. Spearman correlation analysis was carried out to evaluate the correlation of CSF NGAL in BM with other clinical parameters. A, Correlation between the levels of CSF NGAL and serum NGAL in BM patients (n = 67). B, Correlation between the levels of CSF NGAL and CSF WBC in BM patients (n = 67). C, Correlation between the levels of CSF NGAL and blood WBC in BM patients (n = 67). D, Correlation between the levels of CSF NGAL and CSF glucose in BM patients (n = 67). E, Correlation between the levels of CSF NGAL and CSF chloride in BM patients (n = 67). F, Correlation between the levels of CSF NGAL and CSF protein in BM patients (n = 67). NGAL Neutrophil Gelatinase-Associated Lipocalin, BM bacterial meningitis, TBM tuberculous meningitis, CM cryptococcal meningitis, HC hospitalized controls