What are the safeguards implemented to prevent the interference of mouth alcohol in tests?

The correct answer highlights several important safeguards designed to minimize the impact of mouth alcohol during breath alcohol testing.

Deprivation is a critical procedure that involves ensuring the individual being tested does not ingest any substances or engage in actions that could introduce residual alcohol from the mouth into the testing sample. This generally requires a waiting period after any drinking event to allow for the mouth alcohol to dissipate before conducting the breath test.

The concept of a Duplicate Test further supports accuracy by giving the testing process a second chance at measuring the breath sample. If the tests yield noticeably different results, this could indicate the presence of mouth alcohol or other issues affecting the accuracy and can prompt further investigation.

The .02 Threshold refers to setting a measurable limit that can trigger further testing or invalidate a reading. By introducing this threshold, the testing process can help ensure that only valid samples that accurately reflect the individual’s blood alcohol concentration are considered.

Together, these elements create a comprehensive approach to preventing mouth alcohol from affecting the test results, ensuring the integrity and reliability of breath alcohol measurements.