QED Saliva Alcohol Test

DOT Approved as Alcohol Screening Device

The Q.E.D. was one of the first devices to be approved by the U.S. Department of Transportation (DOT) as an Alcohol Screening Device. DOT approval means that the Q.E.D. reliably and accurately detects alcohol at the 0.02 concentration or higher, and does not give false positive readings when no alcohol is present. DOT approval allows users to use the Q.E.D. for screening tests required by Dept. of Transportation regulations.


Semi-quantitative Results

Because the proportion of alcohol in saliva is directly related to the proportion of alcohol in blood, the Q.E.D. device can accurately measure intoxication levels. Alcohol in the saliva creates a column of vivid reddish-purple color. The user reads the device at the upper limit of the color using the scale, exactly like reading a thermometer. If no alcohol is present no color develops.


Accurate as Blood Alcohol Test

The Q.E.D. device virtually duplicates blood alcohol results. Studies have demonstrated a .98 correlation (1.00 is a perfect correlation) between saliva test results with the Q.E.D. and laboratory blood alcohol results.




Test Medium


Test principle


Reading Time

Two minutes


Semi quantitative

Measurement Range

0.01% - 0.15% BAC

Shelf life

12 months from date of manufacture


The subject holds the swab in the mouth for approximately 60 seconds to collect oral fluid.


The operator presses the swab in the test well until oral fluid fills the column.

DOT Workplace Treatment Facilities Law Enforcement Schools Corrections
  • DOT approved as Alcohol Screening Device
  • Semi-quantitative results
  • Accurate as a blood test
  • Results in two minutes
Price $7.25

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