The invention discloses a method for detecting the concentration of eight second-line
antituberculous drugs based on HPLC-MS / MS. The eight second-line
antituberculous drugs are divided into two groups for detection, one group takes
levofloxacin as an
internal standard substance, and an
internal standard stock solution is prepared; the method comprises the following steps: detecting by taking standard substances of
levofloxacin,
ciprofloxacin and
gatifloxacin as target substances; and in the other group, albendamide, deramanib, pritomanib,
clarithromycin and
azithromycin are used as target objects for detection. According to the method, the detection time is short, only 5 min is needed, and the detection time is saved; meanwhile, according to the method disclosed by the invention, the consumption of an
organic solvent is reduced, so that the
pollution to the environment is reduced, and the method has the characteristics of high accuracy and good precision, and provides the fastest and effective basis for
clinical treatment.