Table 1.

Comparison of performance of HRP-based LFIAs for the detection of IgG (for reference, conventional AuNP-based LFIAs and ELISAs for IgG are also reported as the first and last table entries, respectively).

Technique	Detection Principle	Tracer	Limit of Detection	Reference
Colorimetric LFIA	Visual detection	AuNP	50 ng mL−1	[72]
Colorimetric LFIA	Measurement of color intensity with a portable strip reader	AuNP	2 ng mL−1	[72]
Colorimetric LFIA	Visual detection	HRP with metal enhancer (AuNPs) using TMB substrate	5 ng mL−1	[72]
Colorimetric LFIA	Measurement of color intensity with a portable strip reader	HRP with metal enhancer (AuNPs) using TMB substrate	200 pg mL−1	[72]
Colorimetric LFIA	Visual detection	HRP with metal enhancer (AuNPs) using AEC substrate	5 ng mL−1	[72]
Colorimetric LFIA	Measurement of color intensity with a portable strip reader	HRP with metal enhancer (AuNPs) using AEC substrate	310 pg mL−1	[72]
Colorimetric LFIA	Visual detection	HRP with metal enhancer (AuNPs) using DAB substrate	50 ng mL−1	[72]
Colorimetric LFIA	Measurement of color intensity with a portable strip reader	HRP with metal enhancer (AuNPs) using DAB substrate	1.6 ng mL−1	[72]
Colorimetric ELISA	Measurements of absorbance using a microwell plate reader	HRP using TMB substrate	0.24 ng mL−1	[78]
Colorimetric ELISA	Measurements of absorbance using a microwell plate reader	HRP using TMB substrate	20 pg mL−1	[79]