2 - 3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
For more information, please view the literature below.
Stool or rectal swab placed in stool culture transport vial
1 to 2 g, 1 to 2 mL, or one swab
Rectal swab with obvious stool
Stool culture transport vial; culture collection swab may be used to collect rectal swabs or a swab of fecal material, then swab should be placed in stool culture transport vial (Para-Pak® orange).
Maintain specimen at room temperature.
Specimen received in grossly leaking transport container; diapers; dry specimen; specimen submitted in fixative or additive; specimen received in expired transport media or incorrect transport device; inappropriate specimen transport conditions (not in a C&S vial or in an overfilled C&S vial); specimen received after prolonged delay in transport (usually more than 72 hours); specimen stored or transported frozen; wooden shaft swab in transport device; unlabeled specimen or name discrepancy between specimen and request label
Detect the presence of Shiga-toxin-producing enterohemorrhagic E coli
There are four types of pathogenic E coli (see table). This test detects only enterohemorrhagic E coli; tests are not available for the other pathogenic E coli.
Travelers' diarrhea and infant diarrhea in less developed countries
Hemolytic uremic syndrome
Thrombotic thrombocytopenia purpura
Detection of enterohemorrhagic E coli Shiga toxins by enzyme immunoassay (EIA)
No enterohemorrhagic E coli Shiga toxin detected
Treatment of patients infected with Enterohemorrhagic E coli (EHEC) with antibiotics is contraindicated. Hemorrhagic colitis can be differentiated from other causes of diarrhea by its progression from watery to bloody diarrhea during a few days' time. Fecal leukocytes are markedly increased. Fever is usually absent. The disease is mediated by the production of a Shiga-like toxin that interferes with colonic brush border cells, protein synthesis, and ultimately causes cell death. Enterohemorrhagic E coli (EHEC) differ from other strains of bacteria in the large amount of toxin they produce. Virtually all O157:H7 organisms and other EHEC strains have been shown to produce Shiga toxin.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|180935||E coli Shiga Toxin EIA||21262-1||180935||E coli Shiga Toxin EIA||21262-1|
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