CRP and rheumatic fever: Blood and urine tests for rheumatic fever and other febrile illness revealed elevated inflammatory markers (erythrocyte sedimentation rate (ESR) 65 mm/60 min, C-reactive protein (CRP) 1.32 mg/dl), although blood cell count, electrolytes, blood urea nitrogen, creatinine, liver function, and urinary tests were all normal (Table 1).