Catharine John

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

Enhanced interpretation of newborn screening results without analyte cutoff values

Gregg Marquardt, Robert J. Currier, David McHugh et al. · Genetics in Medicine · 2012 · 123 citations · Full text

Medicine, Child Health, Pediatrics +14

Inborn Error of Metabolism (IEM) screening in Singapore by electrospray ionization-tandem mass spectrometry (ESI/MS/MS): An 8year journey from pilot to current program

James Lim, Ee Shien Tan, Catharine John et al. · Molecular Genetics and Metabolism · 2014 · 73 citations

Pharmacy, Biochemistry, Analytical Chemistry +14

Improving Harmonization and Standardization of Expanded Newborn Screening Results by Optimization of the Legacy Flow Injection Analysis Tandem Mass Spectrometry Methods and Application of a Standardized Calibration Approach

Rachel S. Carling, Emily Whyte, Catharine John et al. · Clinical Chemistry · 2022 · 14 citations · Full text

Natural Sciences, Biochemistry, Analytical Chemistry +14

Challenging the status quo: A comparison of ion exchange chromatography with liquid chromatography–mass spectrometry and liquid chromatography–tandem mass spectrometry methods for the measurement of amino acids in human plasma

Rachel S. Carling, Benjamin AC McDonald, Donna Austin et al. · Annals of Clinical Biochemistry International Journal of Laboratory Medicine · 2020 · 13 citations

Pharmacy, Biochemistry, Analytical Chemistry +16