This paper reviews gas chromatography-mass spectrometry (GC-MS) methods for the analysis of amphetamines, ketamines,opioids, cocaine, and other abused drugs in urine that were developed by authors in Taiwanese institutions, and published during the2000 to early 2008 period. Information on sample preparation, derivatization, internal standard, GC column, detection mode, and validation data for the reported methods are summarized in table format to facilitate readers’ reference and adaptation.