Michele L. Etter

Drugs of abuse testing by tandem mass spectrometry: A rapid, simple method to replace immunoassays

J. Eichhorst, Michele L. Etter, Nadine Rousseaux et al. · Clinical Biochemistry · 2009 · 78 citations

Pharmacy, Pharmacology, Toxicology +16

Clinical determination of 17-hydroxyprogesterone in serum by LC–MS/MS: Comparison to Coat-A-Count™ RIA method

Michele L. Etter, J. Eichhorst, Denis C. Lehotay · Journal of Chromatography B · 2006 · 47 citations

Life Sciences, Biochemistry, Endocrinology +10

Urinary screening for methylphenidate (Ritalin) abuse: a comparison of liquid chromatography–tandem mass spectrometry, gas chromatography–mass spectrometry, and immunoassay methods

J. Eichhorst, Michele L. Etter, Joyce Lepage et al. · Clinical Biochemistry · 2003 · 40 citations

Pharmacy, Pharmacology, Psychiatry +13

Determination of free and protein-bound methadone and its major metabolite EDDP: Enantiomeric separation and quantitation by LC/MS/MS

Michele L. Etter, S. George, K. Graybiel et al. · Clinical Biochemistry · 2005 · 32 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +15

Free and bound enantiomers of methadone and its metabolite, EDDP in methadone maintenance treatment: Relationship to dosage?

Denis C. Lehotay, S. George, Michele L. Etter et al. · Clinical Biochemistry · 2005 · 25 citations

Medicine, Pharmacokinetics, Pharmacology +11