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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 

Reject Due To

Agar plate Reject

Reference Values

Negative

Supportive Data

We evaluated 271 gram -negative bacilli (of which 131 were carbapenemase producers and of which 201 were Enterobacterales) using the Carba NP test and the modified Hodge test. Sensitivity for detection of carbapenemase production was comparable (Carba NP, 100 versus modified Hodge test, 98%, p=0.08), but the Carba NP test was more specific (100 versus 80%, p<0.0001) and faster.(1)

Day(s) Performed

Monday through Friday

Report Available

2 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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

Forms

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

Specimen Minimum Volume

See Specimen Required