Sign in →

Test Code LABCDIF2STEP C difficile 2 Step

Clinical Information

C. difficile PCR followed by toxin testing in PCR-positive specimens.

Synonym

  • CD2STEP

Specimen Required

Preferred Container/Tube: Sterile Kit White Container
Acceptable Container/Tube: Sterile Kit White Container, Sterile Container
Specimen Source: Stool
Specimen Minimum Volume: 1 mL
Processing Instructions: Stool must be sent on ice or refrigerated to the laboratory to optimize the yield of the toxin assay. 

Specimen Stability Information

Refrigerated: 3 days

Rejected Due To

  • Formed stool

Testing Algorithm

If C difficile by PCR is positive, then C difficile Toxin A/B by EIA will be performed at an additional charge.

Reflex Tests

Reporting Name Available Separately Always Performed
C difficile Toxin A/B No No

Reference Values

Negative

Cautions

Only indicated in patients with 3 or more watery stools in 24 hours. Assess patients for common causes of diarrhea such as antibiotics, laxatives, stool softener, tube feedings prior to ordering.

Method Description

Polymerase chain reaction (PCR)

Performing Lab

Clinical Lab University East

Day(s) Performed

Monday through Sunday

Report Available

2 days

Reporting Name

C difficile 2 Step

CPT Code Information

87493
87449 (if appropriate)

LOINC Code Information

61367-9