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HelpTest Code LAB12597 Vibrio Culture, Feces
Reporting Name
Vibrio Culture, StoolUseful For
Determining whether Vibrio species may be the cause of diarrhea
This test is generally not useful for patients that have been hospitalized for more than 3 days because the yield from these patients' specimens is very low, as is the likelihood of identifying a pathogen that has not been detected previously.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
FecalAdditional Testing Requirements
1. If susceptibility testing is desired, also order ZMMLS / Antimicrobial Susceptibility, Aerobic Bacteria, Varies. If susceptibility testing is not needed (eg, due to lack of recovery of Vibrio species from feces), ZMMLS will not be performed and the order will be canceled.
2. In some cases, local public health requirements may impact Mayo Clinic Laboratories (MCL) clients, requiring 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 Vibrio species recovered from specimens submitted to MCL 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: Culture and Sensitivity Stool Transport Vial (T058)
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.
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
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-Vibrio culture, stool
87077-Identification by MALDI-TOF mass spec (if appropriate)
87077-Additional Identification Procedure (if appropriate)
87077-Bacteria Identification (if appropriate)
87153-Aerobe Ident by Sequencing (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| VIBC | Vibrio Culture, Stool | 6579-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| VIBC | Vibrio Culture, Stool | 6579-7 |
Clinical Information
Diarrhea may be caused by a number of agents (eg, bacteria, viruses, parasites, and chemicals), and infection with or exposure to one of these agents may result in similar symptoms. A thorough patient history covering symptoms, severity and duration of illness, age, travel history, food consumption, history of recent antibiotic use, and illnesses in the family or other contacts will help the physician determine the appropriate testing to be performed.
Vibrio cholerae, the causative agent of endemic, epidemic, and pandemic cholera, results in large volumes of rice-water stools due to the production of an enterotoxin. Severe dehydration is of concern in patients without access to adequate medical care. In the United States, Vibrio parahemolyticus is the most common cause of Vibrio disease. V parahemolyticus is associated with the consumption of raw shellfish or fish and results in gastroenteritis with nausea, vomiting, abdominal cramps, low-grade fever, and chills. Usually, rehydration is the only treatment required, although in some cases, antimicrobial therapy is needed.
Interpretation
The growth of Vibrio species identifies a potential cause of diarrhea.
Method Description
The fecal specimen is inoculated onto selective media, thiosulfate-citrate-bile salts-sucrose agar (TCBS), designed to inhibit growth of normal bowel flora while allowing growth of Vibrio species. After incubation, suspect colonies are identified using 1 or a combination of the following techniques: matrix-associated laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, conventional biochemical tests, carbon source utilization, and nucleic acid sequencing of the 16S ribosomal RNA (rRNA) gene.(Tarr CL, Glover WAII, Boucher Y, et al: Chapter 43: Vibrio and Related Organisms. In Manual of Clinical Microbiology. 12th edition. Edited by KC Carroll, MA Pfaller. Washington DC,ASM Press, 2019, pp 775-786)
Report Available
3 to 5 daysReject Due To
| Fecal swab Feces in Ecofix (green cap) Specimen in buffered glycerol saline transport media |
Reject |
Method Name
Conventional Culture
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| RMALD | Ident by MALDI-TOF mass spec | No, (Bill Only) | No |
| GID | Bacteria Identification | No, (Bill Only) | No |
| ISAE | Aerobe Ident by Sequencing | No, (Bill Only) | No |
| REFID | Additional Identification Procedure | No, (Bill Only) | No |
Testing Algorithm
When this test is ordered, the reflex tests may be performed and charged separately.