Den kvantitative bestemmelsen av fett i avføringsprøver, ofte omtalt under begrepet fordøyelsesrester, er en diagnostisk test som brukes for å evaluere fettabsorpsjon og for å identifisere malabsorpsjonssyndromer. Denne testen måler mengden fett som skilles ut i avføringen. Overdrevent fett i avføringen, en tilstand kjent som steatoré, kan indikere problemer med fordøyelse eller absorpsjon av fett i mage-tarmkanalen. Resultatene fra denne testen hjelper til med å diagnostisere tilstander som pankreasinsuffisiens, cystisk fibrose, cøliaki og Crohns sykdom....
Individuals showing symptoms of malabsorption, such as chronic diarrhea, greasy stools, unexplained weight loss, or abdominal discomfort, should undergo this test. It is also recommended for patients suspected of having pancreatic insufficiency, cystic fibrosis, celiac disease, or Crohn’s disease.
Symptoms that might indicate a need for a fecal fat test include bulky stools, stools that are oily or greasy, floating stools, weight loss, and abdominal bloating or pain. These symptoms suggest that fat is not being properly absorbed by the body.
Abnormal results, typically indicating excess fat in the stool, can be caused by conditions that affect fat absorption such as pancreatic insufficiency, celiac disease, Crohn’s disease, and certain liver diseases. These conditions impair the digestion or absorption of fats.
The collected stool samples are analyzed in a laboratory to measure the amount of fat that was not absorbed by the body.