Any influences on the interaction and binding of the analyte that is free in solution in the liquid test sample to its complementary labeled reagent will be encountered in parallel in the binding between {HEAD ~ the immobilized analyte} in {TAIL ~ reference region} to the labeled reagent as it diffuses through the reference region 
Any influences on the interaction and binding of the analyte that is free in solution in the liquid test sample to its complementary labeled reagent will be encountered in parallel in the binding between { HEAD ~ the immobilized analyte } in { TAIL ~ reference region } to the labeled reagent as it diffuses through the reference region
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