
Trace level determination of 5-hydroxytryptamine and its related indoles in amniotic fluid by gas chromatography-mass spectrometry
Keywords: 5-HT; 5-hydroxytryptamine; 5-HIAA; 5-hydroxyindole acetic acid; 5-HTOL; 5-hydroxyindole ethanol; 5-HTP; 5-hydroxytryptophan; GC-MS; gas chromatography-mass spectrometry; SPE; solid-phase extraction; CNS; central nervous system; BSTFA-TMCS; N, O-bis-(t