Article Title

Collaborative study on the determination of phencyclidine in urine by gas chromatography-mass spectrometry


A gas chromatography-mass spectrometry method for the analysis of phencyclidine (PCP) in urine was subjected to an inter-laboratory study. The collaborative study followed the guidelines provided by the Association of Official Analytical Chemists International. Ten laboratories participated, analyzing 3 samples of PCP-spiked urine as blind duplicate. The repeatability relative standard deviation (RSDr) and the reproducibility relative standard deviation (RSDR) were between 2.1%-3.6% and 4.2%-7.3%, respectively. HORRAT values for the reproducibility showed 0.4-0.7, indicating acceptable precision between laboratories. The method was thus proposed to be used by the drug-abuse urine testing laboratories in Taiwan.

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