“…Accordingly, for diagnosis, monitoring and therapeutic interventions for depression, it is highly desirable to detect NT concentrations in human fluids. To date there are many techniques using for detecting NTs, including nanopore, chemiluminescence, capillary electrophoresis, mass spectrometry, chromatography and electrophoresis [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. However, laborious, expensive and complicated pretreatments are the troubles that almost all methods must be able to solve.…”