Lateral Flow Immunoassay for Naked Eye Detection of Mycobacterium tuberculosis

Figure 6

(a) The LFIA strips show reddish coloured signal only appeared at the control line when control sample (buffer solution without antigen) was loaded for 5-10 min. (b) Reddish signals presented on both test line and control line which indicate a positive signal when sputum samples of TB-positive patients 1 to 4 were dispensed on the sample pad.

(a)

(b)