Clostridium difficile Toxin B, Qualitative

Last Modified: 5/2/2022 1:55:08 PM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements:

5 mL unpreserved Stool in a Non-Sterile Yellow Capped Container

Collection Instructions: Transfer liquid or soft stool (but not urine) into the container. 
Avoid mixing toilet paper, or soap with the sample. 

Minimum Volume: 1.0 mL Feces
Transport & Storage: Temperature/Stability: 5 days Refrigerated (store)
30 days Frozen (transport)

Store sample refrigerated until shipment
Rejection Criteria: Specimen other than liquid or semi-formed stool • Stool in preservative or mixed with urine • Specimen in wrong transport container. Stool collected during an endoscopy or colonoscopy procedure with or without wash solution.
Reference Range:

None Detected

Critical Ranges:  
Test Comments:  
Methodology: Real Time Polymerase Chain Reaction (RT-PCR)
Clinical Significance: C. difficile is the major cause of antibiotic-associated diarrhea (AAD) and pseudomembranous colitis.
Custom Panel: No


Turn Around Time: 2 to 4 days
Sites Performed: Quest - Chantilly to San Juan Capistrano
PHL Test Code: CDFE
EPIC Test Code: LAB2806
Send Out Test Code: 16377
Included Tests: Clostridium Difficile DNA; Toxin B Gene
CPT Coding: 87493

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