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Fat, timed stool, quantitative

Lab Section:  Sendout Reference  
Lab Location:  Sendout
Reference Lab: Mayo 
Test ID: LAB5532 
Synonyms: Fecal Fat
Methodology: Nuclear Magnetic Resonance (NMR) Spectroscopy
Schedule: Monday-Friday
Reported: 10 days
Specimen Requirements:  Collection: 5.0 g Stool in a Sterile Container.
Pediatric volume: 5 g.
Stool container(s) OBTAINED FROM Laboratory Reference; The number of containers sent should be indicated on the labels (1 of 4, for example); Patient should be on a fat-controlled diet; No laxatives; No synthetic fat substitutes
Handling: Entire 48-, or 72-hour collection. All containers must be sent together. The entire collection must contain at least 5 g of feces..
Unacceptable conditions: Specimens other than feces; Stored ambient.
Stability: Refrigerated: 180 days; Fozen (preferred): 180 days


Clinical Indications: Steatorrhea (increased fecal excretion of fat) may reflect a number of pancreatic or intestinal disorders, including chronic pancreatitis with or without stone obstruction, cystic fibrosis, neoplasia, Whipple disease, regional enteritis, tuberculous enteritis, gluten-induced enteropathy (celiac disease), Giardia-associated enteropathy, sprue, or the atrophy of malnutrition.

For 3 days prior to and during the collection period: Patient should be on a fat-controlled diet (100-150 g fat per day). No laxatives (particularly mineral oil and castor oil). No synthetic fat substitutes (eg, Olestra) or fat-blocking nutritional supplements. Barium interferes with test procedure; a waiting period of 48 hours before stool collection analysis is recommended.

Reference Interval:  See patient report or consult reference laboratory website.
CPT Code(s): 82710
Last Changed: 12/06/2016 10:02:39
Last Reviewed: 12/06/2016 10:13:54