If a breath analysis has been conducted, what should be done with blood or urine specimens?

When a breath analysis has been conducted, blood or urine specimens will not be sent for alcohol analysis because the breath test is considered sufficient for determining blood alcohol concentration (BAC). The breath analysis is designed to provide an immediate and accurate measurement of alcohol levels in a person's breath, which correlates with their BAC. In many jurisdictions, the results of this breath analysis can be used as the primary evidence in legal situations, making further alcohol analysis via blood or urine unnecessary.

This approach helps streamline the process of DUI investigations and ensures that only relevant samples are analyzed, which is why the retained specimens could be designated for other purposes, but specifically not for alcohol analysis once the breath test is available.