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[Comparison of immunochemical and biochemical tests for occult hemorrhage in feces]
A Benesová1, P Fric, M Zavoral
1Interní oddĕlení Fakultní polikliniky FN 2, Praha.
The authors compared in a group of 104 patients assessment of occult haemorrhage in faeces made by the immunochemical test HemeSelect (HS-SmithKline Diagnostics) and the biochemical Haemoccult test (HT-Röhm Pharma). In all patients subsequently total coloscopy was performed. In the whole group the sensitivity of HS was 49.3% and of HT 16.0% (p << 0.001) and the specificity 72.4% and 100% (p << 0.01). The predictive value in polyps, 10 mm in size or larger, was 65.2% (positive) and 60.0% (negative). The assessed sensitivity and predictive values of HS do not permit to recommend immunochemical tests of this type as an alternative procedure to repeated colonoscopic checks in the dispensarization of high risk groups of colorectal cancer.
The authors compared in a group of 104 patients assessment of occult haemorrhage in faeces made by the immunochemical test HemeSelect (HS-SmithKline Diagnostics) and the biochemical Haemoccult test (HT-Röhm Pharma). In all patients subsequently total coloscopy was performed. In the whole group the sensitivity of HS was 49.3% and of HT 16.0% (p << 0.001) and the specificity 72.4% and 100% (p << 0.01). The predictive value in polyps, 10 mm in size or larger, was 65.2% (positive) and 60.0% (negative). The assessed sensitivity and predictive values of HS do not permit to recommend immunochemical tests of this type as an alternative procedure to repeated colonoscopic checks in the dispensarization of high risk groups of colorectal cancer.