How long does alcohol stay in the human system?
Up to 12 hours depending on the amount of alcohol consumed.

Testing Methods for alcohol and individual detection times:
Saliva Method: 1-12 hours / Urine Method: 6-12 hours

How to Use a Control:
The color reaction with alcohol in saliva is somewhat slower and less intense than with alcohol in aqueous solutions. The Alco-Screen 02 may be qualitatively verified by using a test solution prepared by adding 10 drops of 80 proof distilled spirits to 8 oz. (1 cup) of water. This solution should provide a positive result (distinct colored line) across the reactive pad of the test. Commercially available controls that contain preservatives cannot be used with the Alco-Screen 02.

How to Interpret the Results:
The Alco-Screen 02 test consists of a plastic strip with a reactive pad applied at the tip. The tip, on contact with saliva samples with alcohol in excess of 0.02% (0,2%) will produce a positive result after 4 minutes, which is indicated by the development of a distinct colored line across the pad.

The reactive pad employs a solid phase chemistry that utilizes the following enzyme chemistry that is highly specific in this application. At four (4) minutes, observe the results on the reactive pad. Reading the results may be made easier by placing the test on a white background.

The development of a distinct colored line across the reactive pad indicates the presence of alcohol greater than 0.02% (0,2%) BAC. Results obtained after more than five (5) minutes may be erroneous. Alco-Screen 02 produces a distinct colored line across the reactive pad in the presence of saliva greater than 0.02% (0.02g/dL) BAC. A reagent pad that shows no distinct line should be interpreted as less than 0.02% (0,2%) BAC.

D.O.T. Approved Testing:
The BAC at which a person becomes impaired is variable, dependent upon the individual. Parameters specific to the individual such as physical size, weight, activity level, eating habits and alcohol tolerance all affect the level of impairment.

The United States Department of Transportation (DOT) has established a BAC of 0.02% (0.02g/dL) as the level at which an individual is considered positive for
the presence of alcohol. DOT provides for the use of screening devices
using bodily fluids, including saliva, to detect the presence of 0.02% (0,2)
BAC or greater.

Alco-Screen 02 is so effective that it has been tested and approved by the US Department of Transportation (DOT) for required testing of all transportation
and safety sensitive employees for blood alcohol concentrations above the
federally mandated zero tolerance level of 0.02%.

The Alco-Screen 02 test consists of a plastic strip with a reactive pad applied at the tip. The tip, on contact with saliva samples with alcohol in excess of 0.02% (0,2) will produce a positive result after 4 minutes, which is indicated
by the development of a distinct colored line across the pad. The reactive pad
employs a solid phase chemistry that utilizes the following enzyme chemistry
that is highly specific in this application.