GPT and dengue disease: Median AST and ALT values for dengue without warning signs, dengue with warning signs, and severe dengue (Table 1) were 83.5 U/L, 92 U/L, and 124 U/L, respectively (p<0.001); median ALT values were 49 U/L, 53 U/L, and 73.5 U/L (p = 0.002).