CRP and appendicitis: Firstly, the Canadian Surgeon Pediatric association provided advice on frequent conditions such as umbilical and/or inguinal hernia (i.e., do not routinely order ultrasound), appendicitis (i.e., do not order C-reactive protein or abdomen CT in children with suspected appendicitis), undescended testes (i.e., do not order a routine ultrasound and do not delay referral beyond 6 months of age) (20).