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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Bioanalysis. 2010 Apr;2(4):769–790. doi: 10.4155/bio.10.31

Figure 9. Displacement immunoassay format.

Figure 9

In this type of competitive binding immunoassay, a labeled analog of the analyte is injected onto an immunoaffinity column. A sample is then injected onto the column and the analyte is allowed to displace some of the labeled analog. The size of the peak for the displaced label is directly related to the amount of analyte that was in the sample.