Fat, Feces (Qualitative and Quantitative)
Centralized Core Laboratory:Chemistry
Qualitative: min 5 grams. Quantitative: Entire 24, 48 or 72 hour stool collection (send all stool); entire collection must contain at least 5 grams.
Cause for rejection:
Sent to reference lab
Nuclear Magnetic Resonance (NMR) Spectroscopy
For Qualitative requests, please indicate that stool is a RANDOM collection.
For Quantitative requests (24, 48 or 72 hour stool), mark each container with patient information and date and time collection started and finished, and number of containers (ex., 1 of 4).
For 3 days prior to and during the collection period:
no barium, no laxatives, no synthetic fat substitutes or fat-blocking nutritional supplements. The use of diaper rash ointments will falsely elevate test results.
Ref. range: > or = 18 years: 2-7 g/24 hrs
Reference values have not been established for patients who are <18 years of age
Random Collection: All ages: 0-19% fat
Fecal Fat, Qualitative
Fecal Fat, Quantitative