allo-Ile	Alloisoleucine
AR	Abnormal result
ASA	Argininosuccinic aciduria
BCAAs	Branched-chain amino acids
BKT deficiency	Beta-ketothiolase deficiency
DBS	Dried blood spot
DI	Dietary intervention
GA1	Glutaric aciduria type 1
HCU	Homocystinuria
Hcy	Homocysteine
HFBA	Heptafluorobutyric acid
IEM	Inborn error of metabolism
IEMs	Inborn errors of metabolism
Ile	Isoleucine
IVA	Isovaleric aciduria
Leu	Leucine
LTx	Liver transplantation
Lys	Lysine
MAT I/III deficiency	Methionine adenosyltransferase I/III deficiency
MCA	Methylcitric acid
Met	Methionine
MMA	Methylmalonic aciduria
MRM	Multiple reaction monitoring
MS/MS	Tandem mass spectrometry
MSUD	Maple syrup urine disease
PA	Propionic aciduria
Phe	Phenylalanine
PKU	Phenylketonuria
tHcy	Total homocysteine
Trp	Tryptophan
Tyr	Tyrosine
TYR type III	Tyrosinemia type III
Val	Valine