[Early detection of colorectal cancers by detection of occult blood in feces using Krypto-Haem SSW].

Screening for cancer of the bowels with tests for occult blood in the stools obtained an increasing interest during the last 15 years. In the GDR Krypto-Haem SSW is at the disposal for this purpose. Up to now two larger investigations were performed with this preparation. The results of the studies with Krypto-Haem and Haemoccult were compared as well as questions of the test performance, the secondary diagnostics, the sensitivity of the tests, the compliance and organisation of a screening are treated. From this derived that Krypto-Haem SSW can be recommended as diagnostic test for colorectal tumours within the basic medical care.