In the case of substances with small concentrations in biological substance, liquid or fuel chromatography with tandem mass spectrometry methods have the mandatory sensitivity. In the mentioned scenario, a liquid chromatograph which has a triple quadrupole mass spectrometer operating in several response checking (MRM) method was useful for NPS screening. https://5fmdmb220188755.weblogco.com/30813150/little-known-facts-about-5f-mdmb-2201