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Drug abuse detection

  • US 4,576,184 A
  • Filed: 04/23/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 08/31/1981
  • Status: Expired due to Fees
First Claim
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1. A non-invasive method of detecting drug ingestion by a subject comprising the steps of:

  • (a) non-invasively establishing a plurality of reference waveforms by separately recording time-varying fluctuations in cornea-retinal potential (CRP) and/or brainwaves for each of a series of selected drugs administered to an individual who has been pre-examined for freedom from drugs, said recordings for each drug in the series being made in a standardized set of at-rest conditions;

    (b) non-invasively measuring the subject'"'"'s waveform, by recording time-varying fluctuations in cornea-retinal potential (CPR) and/or brainwaves, for each of the at-rest conditions of said standardized set; and

    (c) comparing the subject'"'"'s measured waveforms with said plurality of reference waveforms to ascertain the existence vel non of any correlation therebetween, thereby determining the presence or absence in said subject of any of said selected drugs.

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