The positive predictive value (PPV) for combination of leukopenia, thrombocytopenia (< 150 × 103/cmm), elevated aminotransferase (AST/ALT > 1.5) and low CRP (< 20 mg/L) is 89.5%, while the negative predictive value is 37.4%. Here, CRP is linked to Decreased total leukocyte count.