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Test Code URNS Culture, Urine-With Susceptibilities

Synonyms/Keywords

Urine C and S, Urine Culture

Specimen Requirements

Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Urine, clean catch midstream (first morning specimen preferred) Sterile, leakproof container  VACUETTE® urine transport tube, No Additive 1 - 6.5 mL 1 mL

Collection/Processing Instructions

Specimens should be delivered to the microbiology laboratory as soon as possible.

Culture of specimens older than 24 hours may lead to a reduction in recovery of microorganisms.  

 

Suprapubic aspirates are submitted in the collection syringe WITHOUT NEEDLE or a sterile screw-capped container.


For more information on Specimen Collection Media/Swab, see Specimen Transport Pictorial.

 

 

Specimen Stability Information

Specimen Type Temperature Time
Urine, Unpreserved Refrigerated ≤72 hours
Urine, Sterile Container Refrigerated ≤72 hours

Rejection Criteria

Urine in swab or Eswab™
Urine >72 Hrs
Leaking containers
Non sterile containers (Hats)
Unidentified specimen
Urine in preservative
Unrefrigerated urine

Test Information

Method is sensitive to 1,000 organisms/mL of urine. Voided and cath cultures containing 3 or more species are considered contaminated unless one organism is predominant. Gram stains are not routinely performed on urine submitted for culture; request separately, if desired. A colony count is reported.  

 

Antimicrobial Susceptibility Testing (AST) will be performed on significant bacterial isolates with unpredictable patterns if standardized methods are available based upon Clinical Laboratory Standards Institute guidelines.  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. If testing against a specific antimicrobial agent is desired, contact the microbiology laboratory.

 

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. Contact the microbiology laboratory for more information.  

 

Eswab™' is a trademark of Copan Diagnostics Inc.

Etest® is a registered trademark of bioMerieux Inc. 

VACUETTE® is a registered trademark of Greiner Bio One International GmbH.

Reference Range Information

Performing Location Reference Range
All Performing Sites No Growth (<1,000 CFU/mL)

Marshfield Labs Performing Department

Marshfield Labs Microbiology

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield Monday through Sunday 2 days Quantitative Culture (0.001 mL)

CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
87086     Colony Count  
87088     Isolation and Presumptive Identification As needed
87077     Definitive Identification As needed
87186   1-2+ MIC susceptibility, micro-broth dilution 1-2 per organism, as needed
87184     KB (disk) susceptibility As needed
87181     MIC susceptibility, Etest®, gradient strip As needed
87147     Serotyping/grouping As needed

Outreach CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
87086     Colony Count  
87088     Isolation and Presumptive Identification As needed
87077     Definitive Identification As needed
87186   1-2+ MIC susceptibility, micro-broth dilution 1-2 per organism, as needed
87184     KB (disk), susceptibility As needed
87181     MIC susceptibility, Etest®, gradient strip As needed
87147     Serotyping/grouping As needed

Ordering Applications

Ordering Application Description
Cerner Culture, Urine-with Susceptibilities