Changeable machine readable assaying indicia

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. Accordingly, the particular pattern of bars and spaces that result from an exposure the physiological fluids of a donor is contemplated to produce a distinct machine readable indicia. The transformation which occurs on the test card will be uninterpretable by the administrator of the test, thus preserving the anonymity and privacy of the tested individual.

Description

RELATED APPLICATION DATA [0001] This application is a continuation of U.S. application Ser. No. 10 / 954,823 filed Sep. 30,2004, which is a division of U.S. application Ser. No. 10 / 779,014 filed Feb. 13, 2004, which is division of U.S. application Ser. No. 10 / 072,154 filed Feb. 6,2002 (now U.S. Pat. No. 6,716,393), which is a division of U.S. application Ser. No. 09 / 444,926 (now U.S. Pat. No. 6,514,461) filed Nov. 24, 1999, which is a Continuation-In-Part of U.S. application Ser. No. 09 / 245,175 (now U.S. Pat. No. 6,342,183) filed Feb. 5, 1999, and a continuation-in-part of U.S. application Ser. No. 09 / 025,559 (now U.S. Pat. No. 5,902,982) filed on Feb. 18, 1998, and a continuation-in-part of U.S. application Ser. No. 09 / 018,487 (now U.S. Pat. No. 6,036,092) filed Feb. 4, 1998, and a continuation in part of U.S. application Ser. No. 08 / 832,957 (issued as U.S. Pat. No. 5,929,422 and reissued as U.S. Pat. No. RE38,509) filed Apr. 4, 1997, and a continuation in part of U.S. application Se...

AI Technical Summary

Benefits of technology

[0009] It is another object of the invention to provide an assaying system which provides more anonymous, reliable and expeditious results than those assaying systems presently found in the art, wherein said results can be obtained quickly without compromising the privacy concerns of the tested donor individual.

[0010] It is a further object of the invention to provide an on-site, portable assaying system which allows the results of said assay to be determined and utilized almost immediately by an employer, without jeopardizing the privacy rights of the individual being tested.

Problems solved by technology

Accordingly, the administrator of the assay lacks access to the test results.

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