Blood laboratory tests (Table 1) showed the following remarkable results: azotaemia (urea 7.33 mmol/L, serum creatinine 168 μmol/L), infection (white blood cells 10 770 cells/mm3, C-reactive protein [CRP] 40.44 mg/L, hypersensitive CRP 10 mg/L), anaemia (haemoglobin 11.1 g/dL), increased anti-streptolysin O (ASO) antibody (890.4 IU/mL), and increased antinuclear antibody (ANA) (1:1280). Here, CRP is linked to anemia.