The authors presented two cases: the analysis of black market product, used
by an admitted patient, by using GC-MS technique rind the analysis of a ur
ine sample for an multiple acute poisoning case with amorbital and diazepam
, by using GC-MS/MS technique; they also presented the sample preparation m
ethod The obtained data (chromatograms and mass spectral show that the GC-M
S method is very useful for certitude diagnosis both for diverse products a
nd drugs, used by patients and the GC-MS/MS technique significantly increas
e the signal-to-noise ratio. GC-MS method is one of the best screening meth
od used in Clinical Toxicology Laboratories and GC/MS/MS technique is very
sensitive method for the determination of some unknown chemical structures.