A Validated Method for the Simultaneous Determination of Methamphetamine and 3,4-Methylenedioxy-N-methamphetamine in Blood-Based Liquid Chromatography-Tandem Mass Spectrometry

Figure 5

The application of the method for analysis of 1995 human blood samples. (a) The number of positive samples with male (red) and female (blue). (b) The relative abundance of MA (blue), MDMA (green), and other drugs (red) within positive drug samples. Samples were prepared and analysed under the optimal condition, according to Section 2.2.

(a)

(b)