sentences:  RLBH testing only took 3 days to determine how resistant the strain of bacteria was.The current research has shown progress in the testing of drug resistance.A recent study found that a research technique known as direct nitrate reductase assay (D-NRA) showed efficient accuracy for the rapid and simultaneous detection of resistance to isoniazid (INH), rifampicin (RIF), kanamycin (KAN) and ofloxacin (OFL).