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HelpTEST ID UREDF Reducing Substance, Feces
Reporting Name
Reducing Substance, FSpecimen Type
FecalSpecimen Required
Supplies: Stool container, Small (Random), 4 oz Random (T288)
Container/Tube: Fecal container
Specimen Volume: 3 g
Collection Instructions:
1. Collect a loose, unpreserved, random fecal specimen.
2. Freeze immediately.
Additional Information: If additional tests are ordered, aliquot and separate sample prior to freezing to allow 1 container per test.
Specimen Minimum Volume
2 g
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Fecal | Frozen | 7 days |
Method Name
Benedict's Copper Reduction Reaction
Reject Due To
| Urine and feces mixed Feces collected in any preservative or fixative |
Reject |
Reference Values
Negative or trace
Day(s) Performed
Monday through Saturday
Report Available
1 to 3 daysSpecimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84376
Forms
If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request (T728) with the specimen.
Useful For
Assisting in the differentiation between osmotic and nonosmotic diarrhea
Screening test for:
-Diarrhea from disaccharidase deficiencies, (eg, lactase deficiency)
-Monosaccharide malabsorption