The most accurate test to diagnose the presence of Meckel’s diverticulum in a young child, particularly one who presents with painless bleeding from the rectum, is a “Meckel’s scan.”
This test uses 99mTC – pertechnate scintigraphy which is taken up by gastric mucosa – both in the stomach and in ectopic (i.e., abnormally located) mucosa found in the diverticulum.
