The parenteral formulation of quinolone antibacterial agents commonly interfered with the bacterial endotoxin test (BET) reaction, given an erroneous result due to the lower pH value of the injection solutionIn order to avoid this, the authors recommended the following procedures: increasing the dilution rate of sample solution (e.g. 8-16 times), and use a higher sensitivity of tachypleus amebocyte lysate (TAL) (0.06-0.03 EU/mL); or carefully adjust the pH value of the sample solution to an optimum condition required (pH 6.8-7.2), to proceed the TAL reaction, in this case, a lower sensitivity of TAL test solution (0.25 EU/mL) can be used to conduct the bacterial endotoxin test.