“…In the research papers related to GLYP and AMPA analysis, GC and LC are preferred. The instruments are mainly coupled with MS [27,28,30,31,[34][35]38,[40][41][42][43][44][45][46][47][48][51][52][53][56][57][58][59][60][61][62][63][64][66][67][68][69][70][71][72][73][74][75][76]78,79,81,84,86,87,[89][90][91][92][93]…”