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Test Code IDEN Culture, Organism ID, Aerobic Bacteria

Important Note

For outreach ordering only. Not available for internal ordering

Synonyms/Keywords

Organism ID, Aerobic Bacteria

Specimen Requirements

Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Pure culture of aerobic bacterium Sealed agar plates

 

Agar slant (e.g. chocolate, tryptic soy)

 

Broth (e.g. tryptic soy, thioglycollate)

      

Collection/Processing Instructions

Submit pure culture of organism on agar plates to keep turn-around-time of identification to a minimum.  

 

Organisms submitted on an agar slant or in an acceptable broth media will require subculture prior to identification.  

 

Do not send primary plates or plates with mixed cultures.  Multiple organisms submitted will be identified and  charged separately. Delay in identification will occur.  

 

Ensure that plates are properly sealed (e.g. tape or parafilm) to prevent contamination and exposure to laboratory personnel.  

Specimen Stability Information

Specimen Type Temperature Time
Agar Plate or Slant After incubation, store at room temperature 5 days
Broth Room temperature 7 days

Test Information

If susceptibility testing is desired, please indicate on the test request form, including specific antibiotics to be tested. If not indicated, standard panels will be tested. Susceptibility testing is performed at additional charge. Methods used include disk diffusion, minimum inhibitory concentration (MIC) by broth microdilution, or MIC by Etest®.

 

 A listing of the tested and reported antimicrobial agents can be seen at Antimicrobial Susceptibility Panels.


The microbiology laboratory uses selective reporting of susceptibility results in order to promote rational antimicrobial usage. For more information on selective reporting, please contact the microbiology technical manager.   

 

Standardized AST is not available for all bacterial species, in which case an MIC determined by a non-standardized method and without interpretation may be available upon request.   

The microbiology laboratory publishes an annual cumulative antibiogram for commonly isolated bacteria, available on the 2024 Combined Inpatient and Outpatient Antibioram   Printed copies are also available from the microbiology laboratory. ​

Etest® is a registered trademark of bioMerieux Inc.

Reference Range Information

Performing Location Reference Range
Marshfield Interpretive report

Marshfield Labs Performing Department

Marshfield Labs Microbiology

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield Monday through Sunday 3 days Conventional culture, standard susceptibility testing, manual or automated identification methods

CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
87077        
87184    

KB disc, as needed

  
87186     MIC, as needed  
87153     Identification by nucleic acid sequencing method, as needed  
87147     Sero-grouping, as needed  
87185     Enzyme detection, as needed  
87181     E-test, gradient strip, as needed  

Outreach CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
87077        
87184    

KB disc, as needed

  
87186     MIC, as needed  
87153     Identification by nucleic acid sequencing method, as needed  
87147     Sero-grouping, as needed  
87185     Enzyme detection, as needed  
87181     E-test, gradient strip, as needed  

Ordering Applications

Ordering Application Description
Cerner Organism ID, Aerobe