Test Catalog

Test ID: E157C    
Escherichia coli O157:H7 Culture, Feces

Useful For Suggests clinical disorders or settings where the test may be helpful

Determining whether Escherichia coli O157:H7 may be the cause of diarrhea


Reflexive testing for Shiga toxin and/or E coli O157:H7 nucleic acid amplification test-positive feces


This test is generally not useful for patients hospitalized more than 3 days because the yield from specimens from these patients is very low, as is the likelihood of identifying a pathogen that has not been detected previously.


This test provides evidence of the presence of the bacterium, Escherichia coli O157:H7, in feces, in a viable state, and provides an isolate for submission to a health department, if needed. Minnesota healthcare providers are required to report all confirmed or suspected cases of E coli O157:H7 and other Shiga toxin-producing E coli to the Minnesota Department of Health. Mayo Clinic Laboratories clients should refer to their local health departments regarding public health submission of E coli O157:H7 and other Shiga toxin-producing E coli isolates.

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
GIDBacteria IdentificationNo, (Bill Only)No
ISAEAerobe Ident by SequencingNo, (Bill Only)No
REFIDAdditional Identification ProcedureNo, (Bill Only)No
ECSerologic Agglut Method 2 IdentNo, (Bill Only)No
RMALDIdent by MALDI-TOF mass specNo, (Bill Only)No

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

When this test is ordered, the reflex tests may be performed and charged separately.


See Laboratory Testing for Infectious Causes of Diarrhea in Special Instructions.

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

Conventional Culture

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

E. coli O157:H7 Culture, F

Aliases Lists additional common names for a test, as an aid in searching

Aerobic Bacterial Stool Culture
Enteric pathogens
E. coli O157:H7 Stool Culture
Escherichia coli O157:H7 Stool Culture
Stool Culture