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Recommendations when to order or not order the test. May include related or preferred tests.
Glutamate dehydrogenase (GDH) antigen and toxin A/B testing for suspected Clostridioides (Clostridium) difficile infection, with reflex to polymerase chain reaction (PCR).
New York DOH Approval Status
Indicates test has been approved by the New York State Department of Health.
This test is New York state approved.
Specimen Required
Patient PreparationInstructions patient must follow before/during specimen collection.
CollectSpecimen type to collect. May include collection media, tubes, kits, etc.
Liquid or soft stool.
Specimen PreparationInstructions for specimen prep before/after collection and prior to transport.
Transfer 1.0 mL stool to a clean, unpreserved transport vial (ARUP Supply# 40910). Available online through eSupply using ARUP Connect (TM) or contact ARUP Client Services at 800-522-2787. (Min: 0.5 mL).
Storage/Transport TemperaturePreferred temperatures for storage prior to and during shipping to ARUP. See Stability for additional info.
Refrigerated. Also acceptable: Frozen.
Unacceptable ConditionsCommon conditions under which a specimen will be rejected.
Specimens preserved in Cary Blair/C&S media, formalin-based fixative (eg, Formalin, SAF) or alcohol-based fixative (eg, PVA, Totalfix, Alcorfix, etc). Formed stool.
RemarksAdditional specimen collection, transport, or test submission information.
StabilityAcceptable times/temperatures for specimens. Times include storage and transport time to ARUP.
Expected turnaround time for a result, beginning when ARUP has received the specimen.
Within 24 hours
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Not Detected
Interpretive Data
May include disease information, patient result explanation, recommendations, or details of testing.
Refer to report
Compliance Category
FDA
Note
Additional information related to the test.
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.
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
Other names that describe the test. Synonyms.
C diff
C diff antigen
C diff toxin
Cdiff
Clostridioides difficle
Clostridium difficile
Toxigenic Clostridioides difficile by LFA with Reflex to PCR, Stool
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