Publications by authors named "Gerald Siefring"

New application protocols for the Emit(®) II Plus 6-Acetylmorphine Assay for human urine screening have been developed on the ADVIA(®) 1800 and 2400 Chemistry Systems. Precision was evaluated at the cutoff and ±25% controls. Recovery and linearity were studied by spiking 6-acetylmorphine (6-AM) into human urine pools.

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We evaluated the performance of Emit(®) II Plus 6-Acetylmorphine Assay for human urine screening on the Viva-E(®) analyzer. Precision was evaluated using the cutoff and ±25% controls. Recovery and linearity were studied by spiking 6-acetylmorphine (6-AM) into human urine pools.

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We evaluated a new protocol for measurement of cyclosporine A (CsA) 2 H after dose (C2) on the V-Twin® analyzer. Imprecision, recovery, and linearity were determined using CsA-spiked blood pools. Accuracy was evaluated using specimens from renal, cardiac, and liver transplant patients, and results were compared with those from liquid chromatography-tandem mass spectrometry (LC-MS/MS) and the Abbott TDx®/TDxFLx® assay.

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