In the case of substances with small concentrations in biological content, liquid or fuel chromatography with tandem mass spectrometry techniques have the necessary sensitivity. From the discussed situation, a liquid chromatograph by using a triple quadrupole mass spectrometer functioning in numerous reaction checking (MRM) manner was utilized for NPS screening. https://5f-mdmb-220157889.anchor-blog.com/11017585/the-2-minute-rule-for-5f-mdmb-2201