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The pH of human faeces is variable but the average is pH 6.6 for normal faeces. [1] [2] A lower faecal pH (very acidic stool) can indicate a digestive problem such poor absorption of carbohydrates or fats, [3] lactose intolerance, [4] an infection such as E. coli or rotavirus, or overgrowth of acid-producing bacteria (such as lactic acid bacteria).
On average, healthy humans eliminate 128 g of fresh feces per person per day with a pH value of around 6.6 as indicated by a Fecal pH test. [23] Fresh feces contains around 75% water and the remaining solid fraction is 84–93% organic solids along with some insoluble phosphate salts.
A fecal pH test may be used to determine lactose intolerance or the presence of an infection. [13] Steatorrhea can be diagnosed using a fecal fat test, which checks for the malabsorption of fat. [14] Faecal elastase levels are becoming the mainstay of pancreatitis diagnosis.
Stool osmotic gap is a measurement of the difference in solute types between serum and feces, used to distinguish among different causes of diarrhea. Feces is normally in osmotic equilibrium with blood serum, which the human body maintains between 290–300 mOsm/kg. [ 1 ]
After sampling water sites around the country, the Surfrider Foundation, an ocean protection advocacy organization, found unsafe levels of fecal contamination at 19% of the 9,095 water samples. Of ...
Pages in category "Stool tests" ... Fecal immunochemical test; Fecal occult blood; Fecal pH test; K. Kato technique; M.
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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 ...