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A stool test is a medical diagnostic technique that involves the collection and analysis of fecal matter. Microbial analysis (culturing), microscopy and chemical tests are among the tests performed on stool samples.
This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. Medical system for classifying human faeces Medical diagnostic method Bristol stool scale Bristol stool chart Synonyms Bristol stool chart (BSC); Bristol Stool Scale (BSS); Bristol Stool Form Scale (BSFS or BSF scale); Purpose classify type of feces (diagnostic triad for irritable bowel ...
The fecal immunochemical test (FIT) is a diagnostic technique that examines stool samples for traces of non-visible blood, which could potentially indicate conditions including bowel cancer. [1] Symptoms which could be caused by bowel cancer and suggest a FIT include a change in bowel habit, anaemia , unexplained weight loss, and abdominal pain .
The Bristol stool scale is a medical aid designed to classify the form of human feces into seven categories. Sometimes referred to in the UK as the Meyers Scale, it was developed by K.W. Heaton at the University of Bristol and was first published in the Scandinavian Journal of Gastroenterology in 1997. [4]
Quantitative fecal fat tests measure and report an amount of fat. This is usually done over a period of three days, the patient collecting all of their feces into a container. The container is thoroughly mixed to homogenize the feces, without using specific mixer equipment. A small sample from the feces is collected.
Testing of stool samples by real-time polymerase chain reaction is able to detect C. difficile about 93% of the time and when positive is incorrectly positive about 3% of the time. [54] This is more accurate than cytotoxigenic culture or cell cytotoxicity assay. [54] Another benefit is that the result can be achieved within three hours. [54]
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The fecal sample is obtained by catching the stool and transferring a sample with an applicator. Digital rectal examination specimens are also used but this method is discouraged for colorectal cancer screening due to very poor performance characteristics. [10] Both sides of the test card can be peeled open, to access the inner guaiac paper.