Abstract: A drug testing urine collection cup includes a cup body having a top bottom flat sidewall with the flat sidewall being transparent. At least one test strip is provided for assaying a fluid sample and visually displaying an assay result. A disk sized for insertion into the cup top for suspending a test strip into the cup body proximate the flat sidewall at a distance enabling visual perception of the assay through the transparent flat sidewall. A cap is provided for sealing the cup top for enabling transport thereof. In addition, the cap may engage the disk for removal of the disk from the cup if such action is desired. Alternatively, the disk may be left in the cap after easy removal of the test strip, the disk then enabling sealing of the cap to the cup for shipping to a confirmation testing site.

Abstract: A method of producing a binding assay device provides a porous membrane comprising a material enabling capillary movement of a liquid sample from a first area on the membrane on a second area on the membrane. A detection site is disposed on the membrane between the first and second areas in a non-absorbent medium disposed on the membrane between the detection site and the membrane first area is attached by an adhesion with a dry reagent disposed between the medium and the membrane in order to enable mobilization of the reagent by passage of a liquid sample therepast.

Abstract: A visual perception of a colored site in an immunoassay device comprising a strip for enabling capillary migration of a fluid sample therealong, a labeled reagent disposed on the strip and formulated for suspension in the sample migrating therepast and a captive reagent immobilized on the strip in a path of sample migration and formulated to bind to is enhanced by changing a color of the strip to the color which is complimentary to the colored site.