Skip to content

Advanced Diagnostic Laboratories

Genotypic Testing for Resistance Markers in Mycobacteria

Test Code



Molecular assays can be performed on organisms to determine the presence of mutations associated with drug-resistance. These drug resistance markers will be tested and reported for relevant nontuberculous mycobacteria (NTM) and M. tuberculosis (MTBC) isolates. Genotypic drug marker testing can significantly shorten the time to appropriate therapy for some organisms by rapidly identifying the presence of mutations associated with antibiotic resistance.

Testing is only performed, reported and billed when appropriate for the organism identified. It is automatically included on appropriate organisms when the APPRO algorithm is ordered. It can also be ordered separately on pure isolates or clinical specimens (where it will be performed only if growth of a relevant organism is seen).