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Brazil’s National Health Surveillance Agency (ANVISA) has approved certain of Waters’ chromatography system, as well as the Xevo® TQD, Xevo TQ-S micro and Xevo TQ-S1 mass spectrometers for in vitro diagnostic (IVD) use. Over recent years, the scope of use for IVD LC-MS instrument systems in the clinical environment has widened and the number of tests that can be developed and validated by diagnostic laboratory service providers has grown rapidly.
Waters’ LC-MS IVD instrument systems have previously been listed with US FDA, CE marked in Europe under the European Directive 98/79/EC (IVDD) and registered in China (registration of the ACQUITY UPLC I-Class/TQ-S micro IVD system is in process).
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![Targeted proton transfer charge reduction (tPTCR) nano-DESI mass spectrometry imaging of liver tissue from orally dosed rat (Animal 3). a) optical image of a blood vessel within liver tissue. b) Composite ion image of charge-reduced haeme-bound α-globin (7+ and 6+ charge states; m/z 2259.9 and m/z 2636.3 respectively, red) and the charged-reduced [FABP+bezafibrate] complex (7+ and 6+ charge states; m/z 2097.5 and m/z 2446.9 respectively, blue). c) Ion image composed from charge-reduced haeme-bound α-globin (7+ and 6+ charge states) showing abundance in blood vessels. d) Ion image composed from charge-reduced [FABP+bezafibrate] complex (7+ and 6+ charge states) showing abundance in bulk tissue and absence in the blood vessel. Reproduced from https://doi.org/10.1002/ange.202202075 under a CC BY licence. Light and mass spectromert imaging of tissue samples](/sites/default/files/styles/thumbnail/public/news/MSI%20drug-protein%20complex-w.jpg?itok=CBNIjyYl)




