J. Thomas

A SENSITIVE LC-MS/MS ASSAY FOR THE QUANTIFICATION OF METHADONE AND ITS METABOLITES IN DRIED BLOOD SPOTS: COMPARISON WITH PLASMA.

U. Christians, B. Davari, Nidhi C Kotecha, 2020, Therapeutic drug monitoring.

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

K. Hoffman, U. Christians, B. Schniedewind, 2011, Journal of separation science.

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

K. Hoffman, U. Christians, B. Carvalho, 2011, Analytical and bioanalytical chemistry.

A COMPARISON OF USING MONOCLONAL AND POLYCLONAL ANTIBODIES IN AN IMMUNOASSAY OF AMPHETAMINES IN URINE

J. Thomas, B. Hunter, Y. Lee, 1991 .