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- W2110343203 abstract "We present an evaluation of a new phencyclidine (PCP) enzyme immunoassay (PCPI) for detection in urine. The PCPI was evaluated by testing 523 urine specimens. Controls containing 0 ng/mL of PCP and -25% (negative control) and +25% (positive control) of the 25 ng/mL cutoff calibrator were analyzed with each batch. All urines were analyzed by high-performance liquid chromatography- tandem mass spectrometry (HPLC-MS-MS) for PCP. Of the 523 specimens tested, 218 yielded positive results by the PCP assay. HPLC-MS-MS confirmed the presence of at least 25 ng/mL in 214 specimens, indicating four false-positive results containing 11, 13, 16, and 20 ng/mL PCP. Three specimens yielded a negative result; however, PCP concentrations were within 20% of the 25 ng/mL cutoff value. The overall agreement of PCPI and HPLC-MS-MS results was 98.7%. The sensitivity of the PCPI was 0.982 and the specificity 0.987. Testing at 100 ng/mL of other drugs or their metabolites demonstrated no cross-reactivity. The within-run precision was CV = 2% (n = 12); the between-run precision was CV = < 6% (n = 4). The assay was found linear from -50% to 150% (12.5-37.5 ng/mL) of the cutoff concentration. The Lin-Zhi PCPI provides a precise, reliable method for the routine detection of phencyclidine in urine specimens." @default.
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- W2110343203 date "2011-09-01" @default.
- W2110343203 modified "2023-09-25" @default.
- W2110343203 title "Evaluation of a New Phencyclidine Enzyme Immunoassay for the Detection of Phencyclidine in Urine with Confirmation by High-Performance Liquid Chromatography-Tandem Mass Spectrometry" @default.
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- W2110343203 doi "https://doi.org/10.1093/anatox/35.7.481" @default.
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