Keith L. Hoffman

Semi-automated 96-well liquid–liquid extraction for quantitation of drugs in biological fluids

Nanyan Zhang, Keith L. Hoffman, Wenlin Li et al. · Journal of Pharmaceutical and Biomedical Analysis · 2000 · 76 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +8

A sensitive assay for the quantification of morphine and its active metabolites in human plasma and dried blood spots using high-performance liquid chromatography–tandem mass spectrometry

Claudia F. Clavijo, Keith L. Hoffman, James J. Thomas et al. · Analytical and Bioanalytical Chemistry · 2011 · 74 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +13

Comparison of the quantification of acetaminophen in plasma, cerebrospinal fluid and dried blood spots using high-performance liquid chromatography–tandem mass spectrometry

Rachel R. Taylor, Keith L. Hoffman, Björn Schniedewind et al. · Journal of Pharmaceutical and Biomedical Analysis · 2013 · 50 citations · Full text

Pharmacy, Pharmaceutical Analysis, Pharmacology +14

A low blood volume LC‐MS/MS assay for the quantification of fentanyl and its major metabolites norfentanyl and despropionyl fentanyl in children

Claudia F. Clavijo, James J. Thomas, Meghan Cromie et al. · Journal of Separation Science · 2011 · 44 citations

Pharmacy, Pharmacokinetics, Pharmacology +16

Elimination of "hook-effect" in two-site immunoradiometric assays by kinetic rate analysis.

Keith L. Hoffman, Gibbe H. Parsons, L J Allerdt et al. · Clinical Chemistry · 1984 · 29 citations · Full text

Life Sciences, Immunology, Dose-response Modeling +14