A publication by Konstantinidis et al. in 2015 evaluated CSF procalcitonin levels and compared CSF procalcitonin levels with CSF levels of other established markers of infection, such as CRP, high-sensitivity CRP, and White Blood Cells (WBC) in 30 ICU, Medicine, Neurology, Hematology, and Pediatric patients with bacterial (n = 19) or viral (n = 11) meningitis, and in 28 patients with non-infectious diseases. The gene discussed is CRP; the disease is infectious disease.