CRP and infection: Changes in CRP and PCT over 2–7 days have been described in non-critically ill patient populations [13]–[20], in relatively small studies, about 50 patients or less [4], [9], [13], [15], [16], [19], [21]–[25], in specific conditions [2], [8], [10], [13], [15]–[17], [19], [20], [22], [24], [26]–[29] or in heterogeneous conditions in the ICU [4]–[7], [9], [11], [21], [23], [30]–[32], to judge the course of infection and its sequelae.