Substrate	Immobilizing Matrix	Detection Limit	Sensitivity	Sample	Technique	Ref
Au IDμEs	DTSP SAM	0.36 pg mL−1	3.2 kΩ (pg mL−1)−1	Saliva/ ISF	EIS	[35]
Au IDμEs	DTSP SAM	0.36 pg mL−1	7.9 kΩ (pg mL−1)−1	Saliva	EIS	[37]
PANI protected Au Nanoparticles/ Au IDμEs	EDC/NHS	0.36 pg mL−1	4.5 µA (g mL−1)−1	Cortisol in PBS solution	CV, DPV	[39]
Coreshell Ag@AgO-PANI/ Au IDμEs	EDC/NHS	0.64 pgmL−1	183 µA (g mL−1)−1	Cortisol in PBS	CV	[40]
Reduced Graphene (rGo)/Au IDA	-	1 ng mL−1	-	Saliva	CV	[41]
Au IDμEs	DTSP SAM	0.36 pg mL−1	6.4 kΩ (pg mL−1)−1	ISF	EIS	[45]
Screen Printed Carbon Electrode	Potein A-modified magnetic particle	3.5 pg mL−1	-	Serum	DPV	[46]
Au Nanoparticle/Au IDμEs	DTBP-Protein G Scaffold	16 pg mL−1	1.6 µA (pg mL−1)−1	Blood	Square wave voltammetry	[47]
Pt Electrode	NHS-WSC SAM	1 ng mL−1	200 nA (200mg dL−1)−1	Saliva	Current by GOD-cortisol reaction	[48]
Au IDμEs	DTSP SAM	10 pg mL−1	6 µA (pg mL−1)−1	Saliva	CV	[49]