Development and Application of a LC-MS/MS Method for Simultaneous Quantification of Four First-Line Antituberculosis Drugs in Human Serum

Figure 5

Chromatograms of the selected columns: (a) XSelecT HSS T3 column; (b) Waters XBridge Shield RP18 column; (c) Agilent Zorbax SB-C18.

(a)

(b)

(c)