Drug-susceptibility testing for tuberculosis is unreliable

According to a recent report from South Korea, "The demand for reliable drug-susceptibility testing (DST) increases with the expansion of antituberculosis drug-resistance surveillance, and with the need for an appropriate treatment of multidrug-resistant tuberculosis, whose incidence gradually increases in many parts of the world.

"However, the reliability of DST results obtained through widely used methods does not meet acceptable levels, except for DST to isoniazid and rifampicin. In general, susceptibility results are highly predictable, while resistance results show low predictive values...

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