|Downtime form:||A-1a Doctor-Provider Orders - Pathology Microbiology|
356-2591 Bacteriology/Virology Section
For persistent diarrhea >=7 days' duration, travel-related diarrhea or diarrhea with warning signs or risk factors for severe disease (see above), the gastrointestinal PCR panel should be ordered. If negative, consider additional diagnoses such as a full O&P panel (three samples over 10 days) in patients with an appropriate travel history (Epic LAB8332).
For healthcare-associated diarrhea with onset after the third hospital day, and at least 3 loose stools per day, consider C. difficile testing, which is orderable separately as "C. difficile toxin screen", LAB8239.
Please use FecalSwabs [Stores #105117]
1) Obtain a stool specimen in a clean pan or container. Stool specimens should not contain urine or water.
2) Holding FecalSwab shaft above the red breakpoint mark, insert the entire tip of the FecalSwab into the stool sample and rotate. Do not use FecalSwab as a spoon; rather, coat swab with a visible layer.
3) If visible stool is not coating the FecalSwab tip, reinsert until swab is coated.
4) Using swab and aiming tube away, mash and mix the stool sample against the side of the tube to suspend the sample.
5) Invert the tube several times to homogenize the sample and expose the sample to Cary Blair preservative fluid.
The panel is used to diagnose infection caused by Campylobacter species, Plesiomonas shigelloides, Salmonella species, Vibrio species, V. cholerae, Yersinia species, enteroaggregative E. coli, enteropathogenic E. coli, enterotoxigenic E. coli, Shiga toxin producing E. coli, E. coli O157, Shigella/Enteroinvasive E. coli, Cryptosporidium species, Cyclospora cayetanensis, Entamoeba histolytica, Giardia lamblia, Adenovirus F 40/41, Astrovirus, Norovirus, Rotavirus and Sapovirus.
C. difficile Toxin Screen, Stool