--- Query Results ---

Program:Genetics and Genomics
Test Name:Fecal Reducing Substances (G&G North UAH)
Test Code:FRED
Performing Site: University of Alberta Hospital
Performing Dept:Newborn Metabolic Screen & Biochemical Genetics
Availability:Test performed Monday to Friday
TAT:5 days
Preferred Tube/Container:Loose, random stool. Sterile, screw top container
Specimen Requirements:1. Please see Patient Collection Instructions: Fecal Reducing Substances and Fecal Sugar Identification
2. Submit 5.0 mL of sample.
Min. Sample Required:2 mL
Specimen Processing:Freeze immediately.
Rejection Criteria: Samples received more than 2 hours from collection not frozen must be cancelled by the collection site.
Specimen Handling:Ship frozen.
Ambient transport temperatures result in growth of bacteria which consume reducing sugars, this can yield a false negative result.
Requisition/Form:Submit request using Chemistry Specialty Requisition.
Please ensure all required information, including patient's clinical history/indication, is provided on the requisition.
Indications:Management of short bowel syndrome.
Method:Benedict’s Test
Method Details:Does not detect sucrose.
Poor sensitivity for oligosaccharides.
False positive results can be seen with:
Phenol Salicylates Chloral Hydrate
Aminoglycoside Streptomycin Isoniazid
Ascorbic Acid Sulfonamide Antibiotics Nalidixic Acid
Probenecid Cephalosporins Menthol
Reference Interval:Result Reporting/Interpretation:
Reported Interpretation: Result
Normal: Negative – Trace
Borderline: +1 - +2
Abnormal: +3 - +4

Comments:If pediatric lactase deficiency is suspected, order fecal sugar identification.
Last Updated On:Wednesday, July 23, 2014
Date of Last Review:Jan 2 2018 12:00AM