Hemoccult testing.
D001774:Blood Chemical Analysis / Q000379:methods*; D003110:Colonic Neoplasms / Q000175:diagnosis*; D005188:False Negative Reactions; D005189:False Positive Reactions; D005243:Feces / Q000032:analysis*; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans
D006454:Hemoglobins