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Test Code UREDF Reducing Substance, Feces

Reporting Name

Reducing Substance, F

Useful For

Assisting in the differentiation between osmotic and nonosmotic diarrhea

 

Screening test for:

-Diarrhea from disaccharidase deficiencies, (eg, lactase deficiency)

-Monosaccharide malabsorption

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Fecal


Specimen Required


Supplies: Stool container, small (Random), 4 oz (T288)

Container/Tube: Stool container (T288)

Specimen Volume: 3 g

Collection Instructions:

1. Collect a loose, random stool 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
Fecal Frozen 7 days

Reference Values

Negative or trace

Day(s) and Time(s) Performed

Monday through Saturday

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

84376

LOINC Code Information

Test ID Test Order Name Order LOINC Value
UREDF Reducing Substance, F In Process

 

Result ID Test Result Name Result LOINC Value
6215 Reducing Substance, F 11060-1

Reject Due To

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

Specimens from timed collection (24, 48, 72 hour) or formed stool

Method Name

Benedict's Copper Reduction Reaction

Forms

If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request Form (T728) with the specimen (http://www.mayomedicallaboratories.com/it-mmfiles/gastroenterology-and-hepatology-test-request.pdf)