Callie leaves us in no doubt that the positive bowel cancer sample in this training run is in stand number 3. This stand contains 2ml of urine from a patient with stage 1 bowel cancer. Callie has been trained to not only detect that target odour, but to ignore control samples from people with other bowel conditions such as IBD, Diverticulitis and Crohn’s disease. We believe that information learned from our dogs about the smell of bowel cancer could help deliver an accurate, rapid and non-invasi