NBS	Newborn screening
IEM	Inborn errors of metabolism
QNGM	Quebec Network of Genetic Medicine
DBS	Dried blood spot
DUS	Dried urine spot
TLC	Thin layer chromatography
Triple H	Hyperornithinemia-hyperammonemia-homocitrullinuria
QNSP	Quebec Neuroblastoma Screening Project
NIH	National Institutes of Health
HVA	Homovanillic acid
VMA	Vanillylmandelic acid
QCs	Quality controls
MS/MS	Tandem mass spectrometry
LC-MS/MS	Liquid chromatography-tandem mass spectrometry
CID	Collision-induced dissociation
IS	Internal standard
REB	Research Ethics Board
CIUSSSE-CHUS	Centre intégré universitaire de santé et de services sociaux de l’Estrie-Centre hospitalier universitaire de Sherbrooke
CMMA	Combined malonic and methylmalonic aciduria
ASA	Argininosuccinic aciduria
HCl	Hydrochloric acid
IQA	Internal quality assurance
ERNDIM	European Research Network for Evaluation and Improvement of Screening, Diagnosis, and Treatment of Inborn Errors of Metabolism
LOQ	Limit of quantitation
UHPLC-MS/MS	Ultra-high performance liquid chromatography tandem mass spectrometry
MRM	Multiple reaction monitoring
RRF	Relative Response Factor
LOD	Limits of detection
BSTFA	N,O-Bis(trimethylsilyl)trifluoroacetamide