Guaiac

08/01/2001 - "Despite its proven efficacy in three randomized trials, the relevance of mass screening for colorectal cancer using the guaiac faecal occult blood test is still debated. "
06/15/2014 - "Men with negative results of guaiac-based fecal occult blood test have higher prevalences of colorectal neoplasms than women with positive results."
05/15/1984 - "The findings from this study suggest that screening for fecal occult blood using the stool guaiac slide test is effective in detecting some colorectal cancers at an early stage of disease, often before symptoms appear."
07/01/2011 - "Although guaiac-based faecal occult blood test screening has been shown to be effective in reducing colorectal cancer (CRC) mortality, it has been criticised mostly for its low sensitivity. "
06/01/2015 - "Four randomized controlled trials have demonstrated the efficacy of screening using a guaiac faecal occult blood test (gFOBT) on colorectal cancer (CRC) mortality. "

08/01/2015 - "FIT hold considerable promise over the traditional guaiac methods including improved analytical and clinical sensitivity for CRC, better detection of advanced adenomas, and greater screenee participation. "
03/01/2012 - "The performance of FIT is superior to the standard guaiac fecal occult blood test in terms of screening participation rates and the detection of CRC and advanced adenoma. "
07/01/2010 - "This study was performed to compare the accuracy of a sensitive immunochemical test with the guaiac test for detecting significant neoplasia (advanced adenomas and CRC) in an average-risk population. "
06/15/2015 - "We compared annual screening with guaiac and immunochemical FOBTs (with sensitivities up to 70 and 24% for CRC and adenomas, respectively) to annual screening with a hypothetical NIT (sensitivity of 90% for CRC, no detection of adenomas beyond chance, specificity and cost similar to FOBTs). "
10/01/2013 - "The positive predictive value (ppv) for adenoma was 35.9% for guaiac ft and 50.6% for immunochemical ft. "

01/01/1992 - "FOB tests (guaiac) showed a very low specific rate for diagnosis since only 24 out of 276 polyps bearing patients showed positive results, probably due to the fact that most polyps were non-ulcerating and small lesions. "
11/27/2015 - "The sensitivity of the immunochemical test for the diagnosis of CRC ranged from 0.42 to 0.94 with specificity ranging from 0.40 to 1.00.The sensitivity of the Guaiac test for the diagnosis of the colon polyps was between 0.05 and 0.69, and its specificity - from 0.67 to 0.98. "
07/01/1995 - "The likelihood of finding a polyp was not influenced by the guaiac status of the patients. "
11/01/1990 - "Nineteen cases were detected to have one or more polyps in colon or rectum, of which only 6 were positive by guaiac test, but 18 by Hemolex test. "
11/27/2015 - " analysis of the validity of the Guaiac and immunochemical tests for the diagnosis of colorectal cancer and polyps also showed better results for detection of colorectal cancer compared with the polyps for both tests. "

01/01/2011 - "In two recent randomized studies from the Netherlands comparing guaiac and immunochemical tests in the asymptomatic population, iFOBT were found to detect more cancers than gFOBT. "
10/01/2015 - "Cancer detection through guaiac faecal occult blood testing (gFOBT) amongst this group is low with six out of nine patients having a false negative gFOBT test. "
06/30/2015 - "From 2013, once-only flexible sigmoidoscopy (FS) at age 55 is being phased into the England National Health Service Bowel Cancer Screening Programme (NHSBCSP), augmenting biennial guaiac faecal occult blood testing (gFOBT) at ages 60-74. "
01/01/2015 - "Piloting the Impact of Three Interventions on Guaiac Faecal Occult Blood Test Uptake within the NHS Bowel Cancer Screening Programme."
01/01/2015 - "The Bowel Cancer Screening Programme (BCSP) in England uses a guaiac faecal occult blood test. "

05/15/2011 - "A higher detection rate for colorectal cancer and advanced adenomatous polyp for screening with immunochemical fecal occult blood test than guaiac fecal occult blood test, despite lower compliance rate. "
03/01/2000 - "This study was conducted to assess the diagnostic validity of new different immunochemical fecal occult blood tests for colorectal adenomatous polyps, including reversed passive hemagglutination test (Immudia-HemSp), combination monoclonal antibody guaiac test (Monohaem), latex agglutination inhibition test (Iatro Hemcheck), and latex agglutination tests (LA Hemochaser, OC-Hemodia). "
11/27/2015 - "1) use of Guaiac and/or immunochemical fecal occult blood test as screening-tests for the detection of colorectal cancer and/or colon polyps (1 cm or more in diameter) in people older than 45 years; 2) comparing of results with the results of colonoscopy (colonoscopy is counted by majority of the authors as a "gold standard" for the diagnosis of CRC and adenomatous polyps). "
10/03/2007 - "One type of fecal occult blood test (FOBT), the unrehydrated guaiac fecal occult blood test (GT), is recommended by the United States Preventive Services Task Force and the Institute of Medicine for use in screening programs, but it has relatively low sensitivity as a single test for detecting advanced colonic neoplasms (cancer and adenomatous polyps > or = 1 cm in diameter). "
05/01/1988 - "From 1979 to 1982, 1233 symptom-free subjects at high risk for colon cancer because of family history and/or personal history of bowel neoplasia (cancer or adenomatous polyp) were examined with a guaiac test (Hemoccult II) for occult blood in stools. "