National Safety Council Committee on Alcohol and Other Drugs, October 1986. Duplicate breath-alcohol testing.

Claims that breath alcohol analyzers used in highway safety programs may produce falsely elevated results due to the presence of non-ethanol substances remains a common defense in impaired driving cases. In October 1994 and February 1999 this subcommittee evaluated the likelihood of falsely elevated breath alcohol results being caused by non-ethanol substances in the breath of conscious humans. Literature appearing in the published, recognized scientific literature that directly and indirectly addressed the issue of breath alcohol analysis specificity were reviewed, evaluated and summarized. A total of 50 articles were included in the 1994 and 1999 reports.