A Rapid Inexpensive Presumptive Test for Phencyclidine and Certain Other Cross-Reacting Substances
- 1 September 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Analytical Toxicology
- Vol. 3 (5) , 220-221
- https://doi.org/10.1093/jat/3.5.220
Abstract
A presumptive color test for phencyclidine (PCP) in urine was developed using tetrabromophenolpthalein ethyl ester in chloroform, Levels of 0.1 mg/dL may be readily detected. Amitriptyline, methadone, codeine, propoxyphene, diphenhydramine, and those phenothiazines tested also give a color. A number of frequently encountered drugs including nicotine, caffeine, cocaine/benzoylecognine, amphetamine, and amphoteric opiates do not give a color. No false negatives for PCP have been observed (urine previously analyzed by gas chromatography or immunoassay).Keywords
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