Joyce Lepage

Clinical validation of cutoff target ranges in newborn screening of metabolic disorders by tandem mass spectrometry: A worldwide collaborative project

David McHugh, Cynthia A. Cameron, José E. Abdenur et al. · Genetics in Medicine · 2011 · 352 citations · Full text

Medicine, Biochemistry, Mass Spectrometric Analysis +16

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

Diagnosis and high incidence of hyperornithinemia‐hyperammonemia‐homocitrullinemia (HHH) syndrome in northern Saskatchewan

AbdulRazaq Sokoro, Joyce Lepage, Nick A. Antonishyn et al. · Journal of Inherited Metabolic Disease · 2010 · 36 citations

Medicine, Endocrinology, Pediatrics +3

Blood acylcarnitine levels in normal newborns and heterozygotes for medium‐chain acyl‐CoA dehydrogenase deficiency: A relationship between genotype and biochemical phenotype?

Denis C. Lehotay, Joyce Lepage, James R. Thompson et al. · Journal of Inherited Metabolic Disease · 2004 · 25 citations

Life Sciences, Genetics, Molecular Genetics +12

Simple method for the quantitative analysis of endogenous folate catabolites p-aminobenzoylglutamate (pABG) and its acetamido (apABG) derivative in human serum and urine by liquid chromatography-tandem mass spectrometry

AbdulRazaq Sokoro, Michele L. Etter, Joyce Lepage et al. · Journal of Chromatography B · 2006 · 14 citations

Life Sciences, Biochemistry, Mass Spectrometric Analysis +11