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. Author manuscript; available in PMC: 2009 Mar 1.
Published in final edited form as: Lab Chip. 2008 Jan 14;8(3):392–394. doi: 10.1039/b717220f

Fig. 3.

Fig. 3

(a)Binding kinetics of R-PE samples with various concentrations; (b) Plots showing the dose response of the immunoassay without preconcentration, and with 15 min or 30 min preconcentration. Through maintaining a 30 min on-site preconcentration, this approach can lower the sensitivity limit by about 500 fold from 50 pM to sub 100 fM range. (with 10 μg/ml GFP as simulated molecular background)