PCT is produced by the C cells of the thyroidal gland and some other cell types upon bacterial infection and is stimulated by bacterial endotoxins and lipopolysaccharides, and indirectly by inflammatory markers, such as tumor necrosis factor-alpha, interleukin-6, and interleukin, and has a high specificity in the diagnosis of bacterial infections and sepsis [21]. This evidence concerns the gene IL6 and Sepsis.