The Fecal Fat Stool Test is used to measure the amount of fat (lipids) in a person's stool sample. This test can help determine if a person's body is not properly absorbing dietary fat. Excess fat in the stool can be indicative of a digestive disorder or malabsorption. Malabsorption can be caused by a number of conditions such as infections in the intestines, pancreatic cancer, celiac disease, Crohn's Disease, Cystic Fibrosis, blockage of the bile duct and gallbladder cancer.
This test is usually ordered when a person has symptoms such as chronic diarrhea or loose, fatty stools. A Fecal Fat Test may be ordered with other stool tests such as an Ova and Parasite or Occult Blood Test. Follow up blood tests such as a CBC, CMP, or Celiac Disease Test may be necessary to help a person's doctor make a diagnosis.
Turnaround time for this test is typically 3-8 business days.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
The Fecal Fat test requires a 72 hour stool specimen collection. People ordering this test should contact a lab representative to acquire a specimen collection container and to receive instructions for proper collection and transportation. During collection, specimen should be refrigerated and kept at 2-8 degrees Celsius.
Adults should be on a standard diet containing 50 to 150 g of fat per day for at least three days before test is started and during the 72 hour collection. In children, the amount of fat in the diet should be constant for one day before the test and during the test. The person should not have had mineral oil as a laxative prior to specimen collection.
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