C difficile GDH/Toxins A and B by Immunoassay

Test Code

CDIFFGDH - MM MMC

Alias/See Also

Clostridioides (Clostridium) difficile

CPT Codes
87324, 87449, 87493 if indicated

Preferred Specimen

Fresh Stool (unpreserved) in screw top sterile container.
Microbiology Specimen Collection Guide

Minimum Volume

Fresh Stool: 1 ml

Instructions

A copy of the Stool Collection Patient Instructions (located under laboratory information) should be given to the outpatient or as follows:

Submit fresh stool screw top sterile container.
Send specimen refrigerated.
Label container (not the lid) with two patient identifiers (full name, DOB or MR) and date and time of collection.
Forward promptly.

Specimen Stability

Specimen Type	Temperature	Time
Fresh Stool	Refrigerate	72 hours

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Formed stools are unacceptable for Clostriudium difficile testing.
Fecal specimens in Formalin-based fixative (e.g. sodium acetate formalin, 10% formalin, merthiolate formalin)
Fecal specimens in alcohol-based fixative (e.g. polyvinyl alcohol)

Methodology
Qualitative Rapid Membrane Enzyme Immunoassay

Setup Schedule

Monday through Sunday

Report Available

Same day or next day

Reference Range

Negative
Critical value (automatic call-back): Positive GDH and Toxin

Performing Laboratory
McKee Medical Center - Microbiology/Molecular Laboratory

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.