In a prospective observational study published in 2017, Zhang et al. measured S–PCT and CSF PCT, high-sensitivity C-reactive proteins (Hs-CRP), proteins, chloride, and glucose in three patient groups: 24 patients with suppurative meningitis, 20 with VM, and 22 with tuberculous meningitis (TBM). Here, CRP is linked to meningeal tuberculosis.