Comparison of various biosensors for DSTs detection.

Analytical techniques	Linear range	LOD	Cross-reactivity of DTX-1a	Reference
Electrochemical	100 pg mL−1 to 60 ng mL−1	70 pg mL−1	No	59
Fluorometric	0.5–250 ng mL−1	39 pg mL−1	70%	60
Immunoassay	0.025–10 ng mL−1	10 pg mL−1	No	61
Electrochemical	10–250 nM	8 pM	NM	62
Electrophysiology	—	7.16 ng mL−1	NM	63
Electrophysiology	10–100 μg L−1	10 μg L−1	NM	64
Immunoassay	11.2–38.8 ng mL−1	1 ng mL−1	73%	65
Immunoassay	—	20 ng g−1	40%	66

^aNM: not mention.