| EGDE | ethylene glycol diglycidyl ether |
| FI | flow injection |
| GDH | glucose dehydrogenase |
| GOx | glucose oxidase |
| GO | graphene oxide |
| NAD+ | nicotinamide adenine dinucleotide (oxidized form) |
| NADH | nicotinamide adenine dinucleotide (reduced form) |
| FAD | flavin adenine dinucleotide |
| PQQ | pyrroloquinoline quinone |
| LPEI-Fc | ferrocene-modified linear poly(ethylenimine) |
| SPE | screen-printed electrode |
| PBS | phosphate-buffered saline |