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Fat, Feces 48 Hr
MessageMayo Test Code: FATF
Test Code
FFAT48
CPT Codes
82710
Preferred Specimen
24 hour, 48 hour, or 72 hour fecal collection
Patient Preparation
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 or castor oil).
- No synthetic fat substitutes (eg, Olestra) or fat-blocking nutritional supplements.
- The use of diaper rash ointments will falsely elevate test results. Discontinue use during collection period.
- Barium interferes with test procedure; a waiting period of 48 hours before stool collection analysis is recommended.
Minimum Volume
5 g
Other Acceptable Specimens
Random Fecal collection
Instructions
- All containers must be sent together.
- The entire collection must contain at least 5 g of feces.
- For a random collection, a minimum of 5 g (do not send entire collection) is required.
- The number of containers sent should be indicated on the labels (1 of 4, for example).
Transport Container
Transport container
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: Unacceptable
Refrigerated: 180 days
Frozen: 180 days
Refrigerated: 180 days
Frozen: 180 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Entire contents (24 hours, 48 hours, etc.) not submitted (if a 24 hour collection or greater).
Performing Laboratory
Mayo
Last Updated: September 13, 2022