Kirk Newland

Respiratory retention of nicotine and urinary excretion of nicotine and its five major metabolites in adult male smokers

Shixia Feng, Sunil Kapur, Mohamadi Sarkar et al. · Toxicology Letters · 2007 · 51 citations

Tobacco Control, Urinary Excretion, Tobacco Use +8

Development and validation of a sensitive method for hydromorphone in human plasma by normal phase liquid chromatography–tandem mass spectrometry

Naidong Weng, Xiangyu Jiang, Kirk Newland et al. · Journal of Pharmaceutical and Biomedical Analysis · 2000 · 37 citations

Biochemistry, Medicine, Mass Spectrometry +10

Testing equivalence between two laboratories or two methods using paired-sample analysis and interval hypothesis testing

Shixia Feng, Qiwei Liang, Robin D. Kinser et al. · Analytical and Bioanalytical Chemistry · 2006 · 21 citations

Measurement, Methodology Comparison, Comparative Test +7

A correlation study applied to biomarkers of internal and effective dose for acrylonitrile and 4-aminobiphenyl in smokers

Gerhard Scherer, Kirk Newland, Ermioni Papadopoulou et al. · Biomarkers · 2014 · 21 citations · Full text

Pharmacotherapy, Haemoglobin Biomarkers, Tobacco Control +19

Collaborative Method Performance Study of the Measurement of Nicotine, Its Metabolites, and Total Nicotine Equivalents in Human Urine

Lanqing Wang, John T. Bernert, Neal L. Benowitz et al. · Cancer Epidemiology Biomarkers & Prevention · 2018 · 18 citations · Full text