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The Standardized Field Sobriety Test (SFST) is a series of exercises that a law enforcement officer gives to a driver suspected of driving under the influence of alcohol. The original research that demonstrated a high correlation between failure of the SFST and a high blood alcohol concentration did not utilize a standard control group to validate that the failure of the SFST was not a characteristic of the population at large. This study examined a series of drug naive subjects to determine the rate of failure of the SFST to accurately distinguish a suspect with high blood alcohol content from the general public. Of the 185 subjects tested, 26% of the drug naïve subjects failed the SFST.

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Originally published in Journal of Forensic Toxicology & Pharmacology, 3(2), [Article 120]. The original material can be found here.