test directorySearch Results
Click here to search again.
Test Name:
Fat, Quantitative, Feces
- SBMF No:
23059 - Performance Lab Name:
Manual Lab - Test Mnemonic:
FECAL FAT - ABN:
Not required - CPT Code:
82710 - LOINC Code:
13363-7; 2271-5; 35745-9; 17609-9 - Also Known As:
Fat, Fecal Quantitative
Total Fat, Quantitative
Fecal Lipids
Fecal Fat, Quantitative
Fat, Quantitative
Quantitative Fecal Fat
Stool Fat, Quantitative - Spec Type:
Feces, Timed; 24, 48, 72, 96 hours - Spec Container:
Large (1-gallon) container with tightly fitting lid (contact lab)
– NOTE: Only collection containers supplied by the laboratory are acceptable - Pref Vol:
Entire specimen - Patient Prep:
Do not schedule barium contrast studies during collection period (barium interferes with fat quantitation)
Adult patients should be on a standard diet containing 100 g of fat per day for at least three days before the test is started and during the test.
In children, the amount of fat in the diet should be constant for one day before the test and during the test. The fat content is to be listed on the requisition.
Suggested mean plan for 100 g fat diet:ADULT DIET BREAKFAST FAT (g) DINNER
Fruit Juice
Cereal
Toast
2 eggs
8 oz. whole milk
2 tsp. oleomargarine
Total for Breakfast
10
10
10
30
*
Same as for lunch
Total for Dinner 35
* For milk intolerance, substitute 2 tsp.
oleomargarine for 8 oz. whole milk.
LUNCH
3 oz. broiled meat
Vegetable
Salad
4 oz. whole milk
Bread (or potato)
2 tsp. oleomargarine
1 tsp. salad dressing
Fresh or canned fruit
Total for Lunch
15
5
10
5
35
**
** For milk intolerance, substitute 1 tsp.
oleomargarine for 4 oz. whole milk.
- Spec Collect:
Document collection time period per physician specifications on container label and requisition (usually 72 hours)
Collections of 24, 48, or 96 hours are also acceptable
Throughout the designated time period, collect all feces from each bowel movement and place in the 1-gallon container supplied by the laboratory
Refrigerate container until collection is completed
A single 1-gallon container is usually adequate to hold the entire collected specimen; contact the laboratory for additional containers if required - Spec Process:
Indicate if the entire collection is contained in one container or in multiple containers
If multiple containers, indicate the number of each container (i.e. 1 of 2)
Place all 1-gallon containers in a large plastic bag for transport to the laboratory - Spec Store Transport:
Refrigerated - Spec Reject:
Random collections
Specimens containing barium or charcoal
Specimens in media or preservatives
Specimens collected in plastic bags - Methodology:
Gravimetric Measurement - Clinical Significance:
Abnormalities of any of the processes involved in fat digestion and absorption can lead to steatorrhea. These stools are characteristically greasy and foul smelling. Screening tests for diagnosing steatorrhea include determination of a serum carotene and analysis of fecal fat. - Reference Range:
Children up to 6 years: less than 2 g fat/24 hours
Thereafter: 2-6 g fat/24 hours
Fat, % of dry weight: 15-25% - Additional Test Info:
- Day Run:
Mon, Wed, Fri - Time Run:
8:00 am - Time Reported:
Within 48 hours - Test Type:
LIPID
