[Haemoccult and Colorectal: a comparative prospective study on the detection of occult blood in the feces].

Comparison of Colorektal and Haemoccult in 600 stool samples from 200 ambulatory, non-selected patients over the age of 40 revealed an equal number of positively reacting specimens (Colorektal 5.8%, Haemoccult 5.7%). Comparison of the results in relation to patients showed 28 positive cases with Colorektal and 18 with Haemoccult. Diagnostic workup disclosed a lesion potentially responsible for the bleeding in 67% of the cases with Haemoccult-positive and 54% with Colorektal-positive stool samples.