CRP and glioblastoma: The ROC-Curve test demonstrated that if the CRP level value was measured greater than 55.00 mg/L, it could be 82% sensitive and 75% specific in distinguishing the solitary brain metastatis from the glioblastoma (area = 0.877, p = 0.001, cut-off value = 55.00 mg/L) (Table 2, Figure 2).