[Comparison of immunochemical and biochemical methods for determination of occult fecal blood]. / Srovnání stanovení okultního krvácení ve stolici imunochemickou a biochemickou metodou.

The authors compared two tests of occult Fecal Blood Loss--the immunochemical Hemolex test based on agglutination of latex particles lined with antibodies against human haemoglobin and the biochemical Haemoccult test. Both tests were used to examine 55 patients invited to the department for endoscopic polypectomy or coloscopy as part of dispensarization after resection of colorectal carcinoma. The sensitivity of the Hemolex test (48.6%) is statistically significantly higher, as compared with the Haemoccult test (17.1%), the specificity is insignificantly lower in the Hemolex test (90%), as compared with the Haemoccult test (100%). The results indicate some advantages of the immunochemical examination of occult Fecal Blood Loss and the assumed area of its application.