Year-end Sale % OFF 
Abstract
In 67 patients referred for colonoscopy the faecal blood loss was determined by a 51Cr method and 7 chemical tests. For patients with negative colonoscopy (no. = 10), colorectal polyps (no. = 24), rectal cancer (no. = 8), or colonic cancer (no. = 12), the median 51Cr-determined faecal blood loss was 0.67, 0.74, 1.26, and 2.18 ml/24 h, respectively. For all chemical tests the results were highly influenced by the upper time limit for a positive reaction. Mixing of faecal specimens before testing proved unimportant. Fecatwin sensitive showed more positive tests in delayed compared with immediate analyses (p less than 0.01). Of cases of colorectal polyps, tetramethylbenzidine (TMB) tests including Hemo-Fec Test could detect half, the benzidine test 2 of 5. Fecatwin sensitive and Hemoccult II 1 of 4, and Fecatwin 1 of 24. Of cases of colorectal cancer, TMB tests, the benzidine test, Fecatwin sensitive, Hemoccult, and Fecatwin could detect about 85%, 85%, 85%, 80%, and 45%, respectively. All chemical tests detected faecal blood loss from colorectal lesions more easily than from gastric lesions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
