Laboratory Test Information Guide

Details for Reducing Substances,Urine or Stool - Qualitative

Test Name: Reducing Substances,Urine or Stool - Qualitative
Alternate Name(s):  
Laboratory: Core
Specimen Type: Urine or Stool
Collection Information: First morning specimen is preferred.

Collect a minimum of 5 grams of stool in a sterile container.

Specimen may be collected and submitted as per routine samples but must arrive at Gamma-Dynacare (the testing laboratory) within 24 hours of collection. Samples will be frozen upon receipt.
Test Schedule: Referred out as required
Turnaround time from when specimen
is received in testing laboratory:
10 days
Reference Range: Negative
Effective Date: 2011-02-23
Revised Date: 2020-10-22
Critical Value:  
Interpretive Comments: For the qualitative detection of reducing substances in urine including: glucose (diabetes mellitus), lactose (late pregnancy and lactation), galactose (galactosemia), pentose (essential pentosuria) and ribose (muscular dystrophy).
Special Processing:  
Comments: Ascorbic acid in large quantities may cause false positive results.
Method of Analysis: Thin Layer Chromatography
Critical Information Required:  
Storage & Shipment: If a specimen will be received at Gamma-Dynacare's main lab location within 24 hours of collection, store and ship refrigerated. If not, store frozen and ship on dry ice.
System Codes: 
Stool: REDST/Urine: REDU
Referred To: Gamma-Dynacare Medical Laboratory

Questions? Comments? Contact Laura Gopaul