Test ID: MTBV2
Antimicrobial Susceptibility, Mycobacterium tuberculosis Complex, Broth Method
Method Description 
Describes how the test is performed and provides a method-specific reference
This method is based on presence or absence of a pressure increase inside broth vials containing Mycobacterium tuberculosis in the presence of critical concentrations of the antimycobacterial drugs isoniazid, rifampin, ethambutol, and pyrazinamide. Increasing pressure indicates the presence of actively growing Mycobacterium tuberculosis that is resistant to the critical concentration of drug contained in the broth. Low or undetectable pressure increases in the presence of critical drug concentrations suggests a lack of Mycobacterium tuberculosis growth and susceptibility to the drug at the tested concentration.(VersaTREK Mycobacteria Detection and Susceptibility Testing system, TREK Diagnostics, Cleveland, OH)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Sunday; Varies
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
10-15 days
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
21 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 The location of the laboratory that performs the test
Rochester
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