BRIEF DESCRIPTION OF THE DRAWINGS [0003]FIGS. 1a and 1 b are a perspective and side view of the preferred embodiment of a test strip of the present invention. [0004]FIG. 2 is a side view of an alternative preferred embodiment of a test strip of the present invention. [0005]FIG. 3 is a block diagram of a preferred embodiment of a method for detecting the presence or concentration of a target using