Glutamate dehydrogenase (GDH) antigen and toxin A/B testing for suspected Clostridioides (Clostridium) difficile infection, with reflex to nucleic acid amplification test (PCR).
Qualitative Enzyme Immunoassay/Qualitative Polymerase Chain Reaction
Within 24 hours
New York DOH Approval Status
Transfer 5g stool to a clean, unpreserved transport vial (ARUP Supply# 40910) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1g)
Refrigerated. Also acceptable: Frozen.
Specimens preserved in Cary Blair/C&S media, formalin-based fixative (eg, Formalin, SAF) or alcohol-based fixative (eg, PVA, Totalfix, Alcorfix, etc).
Ambient 2 hours; Refrigerated 72 hours; Frozen 1 week
Refer to report
If C. difficile GDH antigen is detected by LFA but C. difficile toxin is not detected, C. difficile tcdB gene by PCR will be performed, additional charges apply.
87324; 87899; if reflexed, add 87493
|Component Test Code*||Component Chart Name||LOINC|
|3001805||Toxigenic C. difficile Interpretation||34712-0|
- C diff
- C diff antigen
- C diff toxin
- Clostridioides difficle
- Clostridium difficile