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Clostridium difficile Analyzer

Order Name C Diff An
Test Number: 17262993
Revision Date 12/18/2019
Test Name Methodology LOINC Code
Clostridium difficile Analyzer
Enzyme Immunoassay  
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1mL or 1g Stool, Random Sterile Orange Screwtop Container Refrigerated
Alternate 1 1mL or 1g Stool, Random ETM or Cary Blair container Refrigerated
Instructions Raw Soft or Liquid Stool in Sterile Screwtop Container. Stool collected ETM or Cary Blair Container also acceptable.
STABILITY: 3 days Refrigerated 2-8'C (Un-Preserved Stool only viable for 24hrs at RoomTemperature). If testing cannot begin within 3 days then Freeze -20'C.
Note: Formed or Hard Specimens will be Rejected.
Testing Schedule Sun-Sat 
Expected TAT 1-2 Days  
Clinical Use The first step in the C Diff Analyzer is a rapid membrane enzyme immunoassay for the simultaneous detection of Clostridium difficile glutamate dehydrogenase antigen and toxins A and B. The assay detects C. difficile antigen, glutamate dehydrogenase as a screen for the presence of C. difficile and confirms the presence of toxigenic C. difficile by detecting toxins A and B in fecal specimens from persons suspected of having C. difficile disease. 
Notes Positive results are indicative of active infection while negative results effectively exclude infection. Results considered indeterminate with the combination antigen and toxin test will automatically reflex to the molecular assay to detect the presence of C. difficile DNA.
CPT Code(s) 87324, 87449 if reflexed 87493
Lab Section Regional Medical Laboratory