An assay device for detection and determination of an analyte in a test sample uses a barrier containing an aperture to control {HEAD ~ the application} of {TAIL ~ reagents} to the device for greater reproducibility of results 
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An assay device for detection and determination of an analyte in a test sample uses a barrier containing an aperture to control { HEAD ~ the application } of { TAIL ~ reagents } to the device for greater reproducibility of results
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH