Patent ID: 7910381

Claim:
A chromatographic specific binding assay strip device is disclosed, comprising: a) a non-permeable platform strip; b) a permeable membrane testing strip positioned on top of the non-permeable platform strip, said permeable membrane testing strip comprising at least one capture reagent site specific for an analyte being tested; c) a capture reagent positioned at each of said at least one capture reagent site d) a sample receiving pad positioned on top of and at a proximal end of the non-permeable platform strip while in contact with a proximal end of the permeable membrane testing strip e) a reservoir pad positioned on top of and at a distal end of the non-permeable membrane testing strip while in contact with a distal end of said permeable membrane test strip; f) a semi-permeable membrane positioned on top of said sample pad; and g) a conjugate pad positioned on top of said semi-permeable membrane, said conjugate pad comprising a permeable membrane containing a conjugate.