4-MU	4-methylumbelliferone
DMF	digital microfluidics
DMF-F	digital microfluidics fluorescence
NBS	newborn screening
LSD	lysosomal storage disorder
GAG	glycosaminoglycan
DBS	dried blood spot
MPS	mucopolysaccharidosis
IDUA	α-iduronidase
IDS	α-iduronide sulfatase
SGSH	N-sulfoglucosamine sulfohydrolase
NAGLU	acetyl α-glucosaminidase
HGSNAT	α-glucosaminide N-acetyl transferase
GNS	N-acetyl glucosamine -6-sulfatase
GALNS	N-acetyl galactosamine -6-sulfatase
GUSB	β-glucuronidase
β-gal	β-galactosidase
GLB1	β-glucuronidase
ARSB	N-acetyl galactosamine 4-sulfatase
ARSA	arylsulfatase A
Ido	iduronate
CS	chondroitin sulfate
DS	dermatan sulfate
HS	heparan sulfate
KS	keratin sulfate
MS/MS	tandem mass spectrometry
LC–MS/MS	liquid chromatography–tandem mass spectrometry