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Fecal Fat, Quantitative
| Item | Value | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Approval req'd? | No | ||||||||
| Available Stat? | No | ||||||||
| Test code | FATF | ||||||||
| Performed by | Quest | ||||||||
| Sendout? | Yes | ||||||||
| Method | Gravimetric (Quest) or Extraction/spectrophotometry (LabCorp) | ||||||||
| Patient Preparation | Patient should be on a diet including 100 grams of fat per day for 3 days prior to collection and during collection period. In children, the amount of fat in the diet should be constant for 1 day before the test and during the test. The patient should not have had mineral oil as a laxative prior to specimen collection. |
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| Collection Instructions | Keep specimen refrigerated during collection. Place collection container on ice if refrigeration is not possible. Collect stool directly into collection containers. Do not fill any container more than 2/3 full. If another container is necessary (i.e. liquid stool), request second identical type of container from the clinical laboratory. | ||||||||
| Container type | Non-B&T patients: White plastic 1 gallon container B&T patients: LabCorp approved paint can with clip locks. Note: the Red top conatiner with white body (MAYO) is ONLY used for the Alpha-1-Antitrypsin test. |
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| Amount to Collect | See preferred volume | ||||||||
| Sample type | Timed stool collection (24, 48 or 72 hour) | ||||||||
| Preferred volume | 20 gm | ||||||||
| Min. Volume | 3 gm | ||||||||
| UCSF Rejection Criteria | Container not refrigerated during collection. Containers receivced > 2/3 full | ||||||||
| Processing notes | Record total collection time (24,48 or 72 hours) on test requisition. Request the performing laboratory to report the weight of the stool collection. Freeze entire collection can at -20°C and ship on dry ice to China Basin for sendout. Order Quest # 455 for non-B&T patients. Order LabCorp test #001354 for B&T patients |
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| Units | Total g/24 h | ||||||||
| Normal range |
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| Synonyms | stool fat; stool lipids; fecal lipids | ||||||||
| Stability | Room temperature 4 days, refrigerated 6 days, frozen at -20C 2 weeks | ||||||||
| Turn around times | Test performed Monday-Friday. Turnaround time: 7 days. | ||||||||
| Additional information | Collections of 24 or 48 hours are not recommended since results are subject to greater variability. | ||||||||
| LOINC code | 16142-2 | ||||||||
| Last Updated | 12/19/2012 4:29:50 PM | ||||||||
| Entry Number | 372 |
If you have additional questions regarding this test, please call: 415-353-1667