Table 1.

Detection limits and ranges for optically based glucose detection using QDs.

QDs	Ligands	Enzymes	Quenching Mechanism	Detection Range	Reference
CdSe/ZnS@ SiO2	Not given	GOD	H2O2	0.5–3 mM	[30]
CdSe/ZnS	MSA	GOD	Acidic change	0.2–10 mM or 2–30 mM	[12]
CdTe	GSH	GOD	H2O2	0.05–1.0 mM	[31]
CdSe/ZnS	TGA	GOD/HRP	H2O2	0.045–10 mM	Our proposed method