
Keywords: فسفاتانول آمین; UPLC; ultra-performance liquid chromatography; AQC; 6-aminoquinolyl-N-hydroxysuccinimidyl carbonate; nva; norvaline; UV; ultraviolet; MS; mass spectrometry; lis; labeled internal standards (13C15N isotopes); Sd; standard deviation; csf; cerebrospinal flui