Procalcitonin and C-Reactive Protein/Procalcitonin Ratio for Distinguishing between Infectious and Neoplastic Fever in Cancer Patients.

PCT and CRP/PCT are both sensitive markers for identifying infection in patients with malignant tumors, with PCT showing slightly better sensitivity but lower specificity than CRP/PCT. Our findings suggest that CRP/PCT may be more valuable than PCT in distinguishing between infectious fever and neoplastic fever in cancer patients.