These devices not only confirm the presence of alcohol, but they also approximate the actual BAC using a built-in scale. They are DOT approved and CLIA waved and provide accuracy equivalent to laboratory blood analysis without the need for a blood sample.
Once the test strip comes in contact with oral fluid, the color of the pad on the test strip will change based on the donor's approximate blood alcohol concentration.
These DOT approved tests work by detecting alcohol above 0.02% BAC with a simple positive or negative result.
Oral fluid (saliva) tests are a non-invasive test that can be performed anywhere and is ideal for zero tolerance programs. No special training or certifications are required to use the test.