Ab	Antibody
AFP	α-fetoprotein
Ag	Antigen
anti-IgG	Anti-human immunoglobulin G
ASV	Anodic stripping voltammetry
AuNPs	Gold nanoparticles
BSA	Bovine serum albumin
CE	Counter electrode
CEA	Carcinoembryonic antigen
CS	Chitosan
CV	Cyclic voltammetry
EDC	1-ethyl-3-(3-dimethylaminopropyl) carbodiimide
GA	Glutaraldehyde
GCE	Glassy carbon electrode
IgG	Immunoglobulin G
LOD	Limit of detection
LSV	Linear sweep voltammetry
MLAB	Metal-labeled amperometric bioassay
NHS	N-hydroxysuccinimide
QDs	Quantum dots
RE	Reference electrode
RD	Relative deviation
RSD	Relative standard deviation
SCE	Saturated calomel electrode
WE	Working electrode