Table 3.

Summary of reviewed studies on electrochemical biosensors for the detection of tetracycline.

Serial Number	Assay Format	LOD * (ng/mL)	Linear Range (ng/mL)	Sample	Reference
1	Cyclic voltammetry based immunosensor	0.006	0.05–100	Milk, honey and peanut	[66]
2	Differential pulse voltammetry (DPV) based aptasensor	0.19	0.67–1554	Milk	[67]
3	Differential pulse voltammetry based aptasensor	2.22	4.44–2.22 × 104	Milk	[69]
4	Linear sweep voltammetry based molecularly imprinted sensor	9.8 × 10−8	9.94 × 10−5–9.94	Honey	[70]
5	Differential pulse voltammetry based aptasensor	0.27	0.44–2.22 × 103	-	[72]
6	Differential pulse voltammetry based sensor	4.44	133.2–23.088 × 103	Feedstuff, chicken, fish and shrimp	[73]
7	Electrochemical impedance spectroscopy based aptasensor	0.89	0.93–27.71	-	[74]
8	Cyclic voltammetry and square wave voltammetry (SWV) based aptasensor	4.44	4.44–4.44 × 103	-	[75]
9	Electrochemical impedance spectroscopy (EIS) based aptasensor	0.001	0.005–5.0	Milk	[35]
10	Cyclic voltammetry based molecularly imprinted sensor	0.04	0.1–40	-	[76]
11	Cyclic voltammetry based aptasensor	1	0.1–100	Milk	[77]
12	Amperometry based immunosensor	0.86	2.84–171	Milk	[78]
13	Electrochemical impendence spectroscopy (EIS) based aptasensor	10	10–3.0 × 103	Milk	[79]
14	Differential pulse voltammetry based aptasensor	0.25 × 10−2	0.04–4.44 × 105	Milk	[80]
15	Cyclic voltammetry sensor	0.09	1.0–10.0	Water	[81]

* The LOD was determined in buffer medium.