Ordering Recommendation

Determine in vitro susceptibility to antimicrobial agents for extended spectrum beta lactamase producing-organisms.

Mnemonic
MA ESBL
Methodology

Disk Diffusion

Performed

Sun-Sat

Reported

2-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Actively growing E. coli, Klebsiella species, or Proteus mirabilis in pure culture.

Specimen Preparation

Transport sealed container with pure culture on agar slant or in bacterial transport media.  Place each specimen in an individually sealed bag.

Storage/Transport Temperature

Room temperature.

Unacceptable Conditions

Mixed cultures or non-viable organisms.

Remarks

Isolate identification and specimen source required.

Stability

Ambient: 1 week; Refrigerated: 48 hours; Frozen: Unacceptable

Reference Interval

Negative

Interpretive Data

Currently there are no CLSI guidelines for testing organisms other than E. coli, Klebsiella spp., and Proteus mirabilis for the presence of ESBL activity.  The CLSI-approved method does not rule out resistance by other mechanisms.

Compliance Category

Standard

Note

The following agents are tested with and without clavulanic acid: ceftazidime and cefotaxime.

An additional processing fee will be billed for all organisms not submitted in pure culture, as indicated in the specimen requirements.

If species identification is not provided, identification will be performed at ARUP. Additional charges apply.

Hotline History
N/A
CPT Codes

87184

Components
Component Test Code* Component Chart Name LOINC
0063999 Susceptibility, ESBL Screen 6984-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • beta lacatamase susceptibility
  • Cephalosporins
  • ESBL
  • Extended Spectrum Beta Lactamase Susceptibility
Antimicrobial Susceptibility - Extended Spectrum Beta Lactamase