Effect of dietary factors on the detection of fecal occult blood in cats.
Eight different diets were each fed to 6 cats to evaluate the effect on a guaiac and an o-tolidine fecal occult blood test. Fecal samples were collected from day 5 through day 7. Canine blood or pure cottage cheese were used as positive and negative controls, respectively. One hundred thirty-four fecal samples were analyzed. The dry fish (capelin) and vegetable (tapioca) diet and the pure cottage cheese diet had only negative results in both tests, whereas a canned chicken and cereal (rice) diet had negative results in all fecal samples in the o-tolidine tablet test and in 10 of 16 fecal samples in the guaiac paper test. All other fecal samples from cats eating 6 other diets and the canine blood additive were positive in both fecal occult blood tests. These results indicate that occult blood tests based on o-tolidine and guaiac are clinically useful, but cats need to be on a strict diet before the tests are used.
Tuffli
S P
SP
Clinic for Small Animals, University of Bern, Switzerland.
Gaschen
F
F
Neiger
R
R
D000818:Animals; D001560:Benzidines; D002371:Cat Diseases / Q000175:diagnosis*; D002415:Cats; D004032:Diet; D004285:Dogs; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000662:veterinary*; D006138:Guaiac; D009780:Occult Blood
D001560:Benzidines; C009501:2-tolidine; D006138:Guaiac