ARUP's Laboratory Test Directory

Fat, Fecal Quantitative, Homogenized Aliquot : 2002350
[ image for: Fecal Fat Ordering Recommendations]
Fecal Fat Ordering Recommendations
  


Mnemonic: FECQ FAT

Methodology: Nuclear Magnetic Resonance Spectroscopy
Performed: Sun-Sat
Reported: 2-3 days
Specimen Required: Patient Prep: The patient should be on a diet consisting of 50 to 150 g of fat per day for 3 days prior to the study. Non-absorbable fat substitutes, such as Olestra, should be avoided prior to collection.

Collect: 24, 48, or 72-hour stool collection. Refrigerate during collection.

Specimen Preparation: Weigh entire collection. Homogenize entire collection (using a graduated cylinder, add sufficient water to give "milk shake" consistency) and aliquot 20 mL (20 g) to a clean, unpreserved vial (ARUP supply #40910). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 5 mL) Refer to instructions in Stool Collection-Timed Specimens (24, 48, 72 Hours) under Specimen Handling at www.aruplab.com.

Storage/Transport Temperature: Frozen.

Remarks: Provide weight of entire collection, volume of water added for homogenization (if applicable), and duration of collection. Complete information is required in order to perform accurate calculations. If weight and time are not provided, the specimen is assumed to be a random collection. Alternative testing can be performed. See Fat, Fecal Qualitative (ARUP test code 0020385).

Unacceptable Conditions: Random collections. Specimens containing barium or charcoal. Specimens in media or preservatives. Containers larger than 500 mL (500 g), such as paint cans, will be rejected and discarded. Submissions without collection time and weight information.

Stability (collection to initiation of testing): Ambient: 1 hour; Refrigerated: 4 days; Frozen: 2 weeks
Reference Interval:
0-5 years: 0.0-2.0 g/24h
6 years and older: 0.0-6.0 g/24h
Interpretive Data:

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 82710
Cross References: Fat, Quant (Fat, Fecal Quantitative, Homogenized Aliquot), Fat, Quantitative (Fat, Fecal Quantitative, Homogenized Aliquot), Fecal Fat, Quantitative (Fat, Fecal Quantitative, Homogenized Aliquot), Fecal Lipids (Fat, Fecal Quantitative, Homogenized Aliquot), Quantitative Fecal Fat (Fat, Fecal Quantitative, Homogenized Aliquot), Stool Fat, Quantitative (Fat, Fecal Quantitative, Homogenized Aliquot), Total Fat, Quantitative (Fat, Fecal Quantitative, Homogenized Aliquot)