In the situation of substances with low concentrations in biological substance, liquid or fuel chromatography with tandem mass spectrometry strategies have the required sensitivity. During the mentioned scenario, a liquid chromatograph that has a triple quadrupole mass spectrometer operating in numerous reaction monitoring (MRM) mode was useful for NPS screening. https://5fmdmb220167407.ssnblog.com/30091616/about-5f-mdmb-2201