Before conducting duplicate tests, what is necessary to inform the arrestee?

Informing the arrestee about the duplicate test advisory is essential prior to conducting any duplicate tests. This advisory is a crucial communication that explains to the individual that a second test will be administered. It serves to clarify the purpose of the duplicate test, ensuring that the arrestee understands it is a part of the testing process, which aims to validate the results obtained from the first test. This not only helps in maintaining transparency during the process but also protects the integrity of the testing protocol.

Communication of this advisory ensures that the arrestee is aware that their results will be compared and that they have the right to understand how the testing process unfolds. This enhances the fairness and legality of the testing process, and ultimately, it helps in upholding the evidence needed for any subsequent legal proceedings that may arise from the testing.