Why is it critical to follow the SFST protocol closely?

Following the SFST protocol closely is crucial because it directly impacts the reliability and validity of the tests administered to determine an individual's sobriety. Adhering to the standard procedures ensures that the tests yield consistent and accurate results that can be trusted in court. Each step in the protocol is designed based on research and empirical data to effectively measure impairment due to alcohol or drugs.

If the protocol is not followed precisely, the results could be skewed, compromising the test's credibility. This can affect not only the outcome of individual cases but also the overall integrity of the enforcement process. Proper adherence to these methods reinforces the foundational scientific principles upon which the tests are based, thus enhancing their acceptance and effectiveness in legal proceedings.