When the hydrogen peroxide is dripped on to the<unk>  paper, it oxidizes the alpha-guaiaconic acid to a blue colored quinone. Normally, when no blood and no peroxidases or catalases from vegetables are present, this oxidation occurs very slowly. Heme, a component of hemoglobin found in blood, catalyzes this reaction, giving a result in about two seconds. Therefore, a positive<unk>  result is one where there is a quick and intense blue color change of the film.
Stool guaiac test
Fecal fat test
Fecal pH test
Stool test
Fecal occult blood
Rapid urease test
Capsule endoscopy
Double-balloon enteroscopy