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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).
A multi-target stool DNA test was approved in August 2014 by the FDA as a screening test for non-symptomatic, average-risk adults 50 years or older. [8] A 2017 study found this testing to be less cost effective compared to colonoscopy or fecal occult blood testing. [9]
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]
Since fat is a valuable nutrient, human feces normally contains very little undigested fat. However, a number of diseases of the pancreas and gastrointestinal tract are characterized by fat malabsorption. Examples of such diseases are:
Oily stool, a.k.a. steatorrhea. Steatorrhea refers to bulky, foul-smelling, oily stool that tends to be pale in color and float in the toilet bowl, resisting flushing.
In general, increased levels of fecal coliforms provide a warning of failure in water treatment, a break in the integrity of the distribution system, possible contamination with pathogens. When levels are high there may be an elevated risk of waterborne gastroenteritis. Tests for the bacteria are cheap, reliable and rapid (1-day incubation).
Scrapple is kind of like sausage, in that it uses some of the less appetizing parts of the animal to create a flavorful dish. Scrapple uses up the parts of the pig that can't be dired and cured ...
Scrapple sandwich at the Delaware State Fair. Scrapple is fully cooked when purchased. It is then typically cut into 1 ⁄ 4-to-3 ⁄ 4-inch-thick (0.6 to 1.9 cm) slices and pan-fried until brown to form a crust. It is sometimes first coated with flour. It may be fried in butter or oil and is sometimes deep-fried. Scrapple can also be broiled.