Abstract: A machine readable assaying system comprising a test card having machine readable assaying means. A plurality of individual analysis strips, each strip comprising antibodies and/or reagents capable of indicating the positive presence of distinct illicit substances form a pattern of elements including one or more fixed strips and one or more blank regions. The detection of the presence of a particular substance or drug will result in one or more of the analysis strips changing from a first (light reflective) color to a second darker (light absorbent) color. The pattern of analysis strips, fixed strips and blank regions may be provided to encode one or more characters/digits of information. By the inclusion of the analysis strips with the plurality of fixed strips and blank regions, the detection of one or more illicit substances may alter the overall pattern of fixed and test strips and blank regions, and hence cause the encoded information represented thereby to be altered.

Abstract: An assaying system for determining the presence of particular illicit substances in human physiological fluid, consisting of a collection cup, a collection cup lid, and a test card with assaying means, quality control means and adulteration detection means which is secured to the collection cup lid. The assaying means contemplate the addition of control positives such that a pre-determined number of assaying systems would be configured so that a false positive indication would be given by the assaying means in addition to any true positive results which may be present. Accordingly, it would initially be impossible to distinguish true test-positives from control positives, and thus the anonymity of a true test-positive donor individual would be protected. All donor individuals testing negative would be immediately discernible.

Abstract: A machine readable assaying system including an assay card having a machine readable assaying indicia located upon a surface of the card. At least one analysis element is provided with the assaying indicia, and is capable of monitoring a parameter to detect and optically signal the presence or absence of a desired state. The analysis elements composing, at least in part, an assaying mechanism in the form a pattern of elements, generally additionally including at least one fixed element, and or at least one blank region.