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Test Code CARNP Carbapenemase Detection-Carba NP Test, Varies

Infectious

Useful For

Confirming carbapenemase production from pure isolates of Enterobacterales or Pseudomonas aeruginosa

Additional Tests

Test ID Reporting Name Available Separately Always Performed
CARNB Carbapenemase-Carba NP Test No Yes

Reporting Name

Carbapenemase-Carba NP Test

Specimen Type

Varies


Shipping Instructions


1. For shipping information see Infectious Specimen Shipping Guidelines.

2. Place specimen in a large infectious container (T146) and label as an etiologic agent/infectious substance.



Necessary Information


Specimen source and organism identification are required.



Specimen Required


Specimen Type: Organism

Supplies: Infectious Container, Large (T146)

Container/Tube: Slant

Specimen Volume: Isolate

Collection Instructions: Submit Enterobacterales or Pseudomonas aeruginosa isolate in pure culture (ie, not mixed with other organisms), actively growing.


Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Ambient (preferred)
  Refrigerated 

Reference Values

Negative

Interpretation

A positive result indicates production of a carbapenemase by the isolate submitted for testing. A negative result indicates lack of production of a carbapenemase by the isolate submitted for testing.

Clinical Reference

1. Vasoo S, Cunningham SA, Kohner PC, et al. Comparison of a novel, rapid chromogenic biochemical assay, the Carba NP test, with the modified Hodge test for detection of carbapenemase-producing Gram-negative bacilli. J Clin Microbiol. 2013;51(9):3097-3101

2. Nordmann P, Poirel L, Dortet L. Rapid detection of carbapenemase-producing Enterobacteriaceae. Emerg Infect Dis. 2012;18(9):1503-1507

3. Clinical and Laboratory Standards Institute (CLSI): Performance Standards for Antimicrobial Susceptibility Testing. 33rd ed. CLSI Supplement M100, CLSI; 2023

Day(s) Performed

Monday through Friday

Report Available

2 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CARNP Carbapenemase-Carba NP Test 74676-8

 

Result ID Test Result Name Result LOINC Value
CARNP Carbapenemase-Carba NP Test 74676-8

Method Name

Colorimetric Detection of Carbapenem Hydrolysis

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.

Specimen Minimum Volume

See Specimen Required