Test Order - Carbapenemase Gene Detection
Isolates must be confirmed as Escherichia coli, Klebsiella oxytoca, Klebsiella pneumoniae,
Enterobacter species or Pseudomonas aeruginosa.
At this time, acceptance of requests for testing of other Enterobacteriaceae
organisms is on a case by case basis after consultation with HAI program at HAIprogram@cdph.ca.gov
Isolates of Enterobacteriaceae, other than those listed above, that are submitted without prior consultation will not be tested.
Supplemental Information or Form
AST-R Submittal form 08182017
MDL Expanded Carbapenemase Testing Frequently Asked Questions (FAQ)
Performed on Specimens From
Acceptable Sample/Specimen Type for Testing
Pure culture isolate.
Isolates must be resistant to at least one carbapenem, i.e., imipenem, ertapenem, doripenem, or meropenem.
Isolates must be identified to at least the genus level by the submitter.
Mixed cultures received in MDL will not be tested.
Minimum Volume Required
Storage & Preservation of Sample/Specimen Prior to Shipping
at ambient temperature
cultures on nonselective nutrient or similar agar in tubes with leak-proof screw
subject to CLIA regulations require two patient identifiers on the specimen
container and the test requisition
Shipping Instructions which Include Specimen Handling Requirements
at ambient temperature.
Interferences & Limitations
MDL Points of Contact
- Foodborne & Waterborne Diseases Section (510) 412-3796