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Test ID YERSC Yersinia Culture, Feces

Ordering Guidance

This test is not intended to diagnose plague, which is caused by Yersinia pestis. Contact the laboratory for cases of suspected plague.

Additional Testing Requirements

If susceptibility testing is needed, also order ZMMLS / Antimicrobial Susceptibility, Aerobic Bacteria, MIC, Varies. If susceptibility testing is not needed (eg, due to lack of recovery of Yersinia species from feces), it will not be performed and the ZMMLS order will be canceled at time of report.


In some cases, local public health requirements may impact Mayo Clinic Laboratories clients, requiring, for example, submission of isolates to public health laboratories. Clients should familiarize themselves with local requirements and are responsible for submitting isolates to appropriate public health laboratories. Clients can obtain isolates of Yersinia species recovered from specimens submitted to Mayo Clinic Laboratories by calling 800-533-1710 as soon as possible after reporting (to ensure viability of the bacterium).

Shipping Instructions

Specimen must arrive within 96 hours of collection.

Necessary Information

Specimen source is required.

Specimen Required

Patient Preparation: Medications: Do not use barium or bismuth before collection of specimen.

Supplies: C and S vial (T058)

Specimen Type: Preserved Feces

Container/Tube: Commercially available transport system specific for recovery of enteric pathogens from fecal specimens (15 mL of non-nutritive transport medium containing phenol red as a pH indicator, either Cary-Blair or Para-Pak C and S)

Specimen Volume: Representative portion of fecal specimen

Collection Instructions:

1. Collect fresh feces and submit 1 gram or 5 mL in container with transport medium.

2. Place feces in preservative within 2 hours of collection.

3. Place vial in a sealed plastic bag.

Useful For

Determining whether Yersinia species may be the cause of diarrhea


Reflexive testing for Yersinia species from 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, Yersinia species, in feces, in a viable state, and provides an isolate for antibacterial susceptibility testing and, if needed, submission to a health department.


Minnesota healthcare providers are required to report all confirmed or suspected cases of enteric yersiniosis to the Minnesota Department of Health. Mayo Clinic Laboratories clients should refer to their local health departments regarding public health submission of Yersinia isolates.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
GID Bacteria Identification No, (Bill Only) No
ISAE Aerobe Ident by Sequencing No, (Bill Only) No
REFID Additional Identification Procedure No, (Bill Only) No
RMALD Ident by MALDI-TOF mass spec No, (Bill Only) No

Testing Algorithm

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.

Method Name

Conventional Culture

Reporting Name

Yersinia Culture, F

Specimen Type


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Ambient (preferred) 4 days
  Refrigerated  4 days

Reference Values

No growth of pathogen

Day(s) Performed

Monday through Sunday

Report Available

24 to 27 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

87046-Yersinia Culture, Stool-with isolation and preliminary examination

87077-Bacteria Identification (if appropriate)

87153-Aerobe Ident by Sequencing (if appropriate)

87077-Additional Identification Procedure (if appropriate)

87077-Ident by MALDI-TOF mass spec (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
YERSC Yersinia Culture, F 28549-4


Result ID Test Result Name Result LOINC Value
YERSC Yersinia Culture, F 28549-4

NY State Approved