Publications by authors named "Lisa D Tarnai"

A new point-of-care colloidal metal immunoassay urine drugs-of-abuse testing device, the BIOSITE TRIAGE Plus Propoxyphene (TPP), was evaluated for the rapid detection of dextropropoxyphene (PPY) and/or its primary metabolite, norpropoxyphene (NP), in urine at a total PPY/NP concentration of 300 ng/mL or greater. This assay has been added to the Triage device that tests for commonly abused drugs. Adding to drug-free urine PPY and NP established the linearity of the TPP assay at concentrations of 40%, 80%, 120%, and 160% of the cut-off concentration.

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We evaluated the performance of the Roche OnTrak Testcup-er (TC-er), an on-site drug-testing device, for the detection of amphetamines (AMP), barbiturates (BRB), benzodiazepines (BNZ), benzoylecgonine (BE), and opiates (OPI) in urine specimens from hospital emergency departments. This device utilizes a competitive binding microparticle immunoassay to simultaneously determine the presence of the following drugs or drug classes in urine at and above the following cut-off concentrations: AMP, 1000 ng/mL; BRB, 200 ng/mL; BNZ 200 ng/mL; BE, 300 ng/mL; and OPI, 300 ng/mL. One hundred forty-nine urine specimens received from emergency departments were simultaneously tested by the EMIT II monoclonal immunoassay (Emit) and TC-er.

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The performance of three on-site adulterant detection devices that assess the integrity of urine specimens collected for drug-of-abuse testing was evaluated: the Intect 7, MASK Ultra Screen, and Adultacheck 4. Intect 7 simultaneously tests creatinine, nitrite, glutaraldehyde, pH, specific gravity, and the presence of bleach and pyridinium chlorochromate (PCC). Mask Ultra Screen tests creatinine, nitrite, pH, specific gravity, and oxidants, and Adultacheck 4 tests creatinine, nitrite, glutaraldehyde, and pH.

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