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Table 3 Comparisons of modified gold electrode and the cortisol detection results reported in the literature and in the present study

From: Salivary Electrochemical Cortisol Biosensor Based on Tin Disulfide Nanoflakes

Substrate

Detection limit (ng/mL)

Sensitivity

Sample

Technique

Reference

Au IDmEs

0.00036

3.2 kΩ (pg mL−1)−1

Saliva/ISF

EIS

[64]

Au IDmEs

0.00036

7.9 kΩ (pg mL−1)−1

Saliva

EIS

[65]

Au IDmEs

0.00036

6.4 kΩ (pg mL−1)−1

ISF

EIS

[12]

PANI protected Au Nanoparticles/Au IDmEs

0.00036

4.5 μA (g mL−1)−1

Cortisol in PBS solution

CV, DPV

[34]

Au nanoparticle/Au IDmEs

0.016

1.6 μA (pg mL−1)−1

Blood

Square wave voltammetry

[66]

Reduced graphene (rGo)/Au IDA

1.0

_

Saliva

CV

[67]

Core-shell Ag@AgO-PANI/Au IDmEs

0.00064

183 μA (g mL−1)−1

Cortisol in PBS solution

CV

[68]

Au IDmEs

0.01

6 μA (pg mL−1)−1

Saliva

CV

[6]

BSA/anti-C ab /SnS 2 /GCE

0.036

0.0103 mAM −1 cm −2

Saliva

DPV

Current study

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