Direct Screening of Urine for MDMA and MDA by Liquid Chromatography-Tandem Mass Spectrometry*
Journal of Analytical Toxicology 2003 Helena K. Nordgren, Olof Beck 43 citations
There is a limit in the number of substances detected by commercially available reagents. It is therefore important to have other, complementary techniques. Liquid chromatography-tandem mass spectrometry (LC-MS-MS) may offer one possibility. An LC-MS-MS procedure based on the detection of positive ions after atmospheric pressure chemical ionization (APCI) was developed for direct measurement of...