Test Catalog

Test ID: TB2LN    
Susceptibility, Mycobacterium tuberculosis Complex, Second Line, Varies

Method Description Describes how the test is performed and provides a method-specific reference

This test utilizes the MycoTB broth microtiter dilution plate (Trek Diagnostic Systems, Inc., Cleveland, OH). Antimicrobials included in the assay are tested according to the Clinical and Laboratory Standards Institute (CLSI) guidelines. The plate contains lyophilized antimicrobials which are rehydrated prior to testing. A standardized suspension of the Mycobacterium tuberculosis isolate is added to the plate wells and the plate is incubated at 36 degrees C in 5% to 10% CO(2) for up to 14 days. The first drug-containing well with no visible growth is determined to be the endpoint.(CLSI. Susceptibility Testing of Mycobacteria, Nocardiae, and Other Actinomycetes; Approved Standard. CLSI document M24-A2. CLSI, Wayne, PA, 2011; Hall L, Jude KP, Clark SL, et al: Evaluation of the Sensititre MycoTB plate for susceptibility testing of the Mycobacterium tuberculosis complex against first- and second-line agents. J Clin Microbiol 2012;50:3732-3734)

PDF Report Indicates whether the report includes an additional document with charts, images or other enriched information


Day(s) Performed Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Sunday

Report Available The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

21 to 30 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

1 year

Performing Laboratory Location Indicates the location of the laboratory that performs the test