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HelpTest Code CDT GDH/Tox CLOSTRIDIOIDES DIFFICILE GDH AG/Toxin
Aliasis
C diff, CDT
Patient Preparation
No special patient preparation required
Special Collection Instructions
Collect directly into a clean dry container. Do not place in preservative. Stool must be liquid.
Collection Method
Stool collection
Minimum Volume
1.0 mL
Container
Sterile container
Cary Blair or C&S container
Preferred Specimen
Raw liquid stool
Acceptable Specimen(s)
Raw liquid stool in sterile container
Reference or Target Ranges
Negative for Clostridioides difficile
Reportable Units
Positive/Negative
Critical Value
Positive
Reasons for Rejection
|
Other: |
Formed Stool, QNS, contaminated, Improperly labeled, Improper specimen type |
|
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Patient is <2 years Patient has had a Positive result in last 28 days or Negative result in the past 7 days. |
Specimen Stability
|
Ambient |
N/A |
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Refrigerated |
72 Hours |
Performance Information
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Days and Time Performed |
Daily between 0700-1500 |
|
Expected Turn Around Time |
2-hours from the time specimen is received into Microbiology Department |
|
Performing Bench |
CRMC Serology |
Additional Information / Important Notes
If the interpretation is Indeterminate, it will reflex for CDT PCR confirmation. The following mnemonic will be included in the patient report: “The presence or absence of toxigenic C diff cannot be determined using the EIA methodology of this assay. A CDT by molecular method will be performed.”
Methodology/Method Description
Enzyme Immunoassay screen
CPT Codes
87449; 87324