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Are you familiar with the multiple methods you could use to perform an ELISA? Among the standard assay formats illustrated below, where differences in both capture and detection are in concern, it is important to differentiate between the particular strategies that exist specifically for the detection step. However an antigen is captured to the plate (by direct adsorption to the surface or through a pre-coated "capture" antibody, as in a sandwich ELISA), it is the detection step (as either direct or indirect detection) that largely determines the sensitivity of an ELISA.
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|Capture Ab Coating||X||X||√||X|
|Sample (Antigen) Incubation||X||X||√||√|
|Primary Ab Incubation||√||√||√||√|
|Secondary Ab Incubation||√||X||√||√|
Compared to the other ELISA formats, the sandwich ELISA has the following advantages:
The diagram below shows the schematics for Boster’s sandwich ELISA assay. Check our online catalog of complete, ready-to-use sandwich ELISA Kits below... Choose the kit for your purposes from a selection of almost 1000!
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