Where are most blood and breath tests administered for drunk driving cases?

Most blood and breath tests for drunk driving cases are typically administered at the jail. This is because it is a controlled environment where law enforcement can ensure the processes are followed properly and the appropriate chain of custody is maintained for the collected evidence. Additionally, administering tests at the jail allows for immediate processing and further action if necessary, in line with legal protocols.

While some breath tests may initially occur roadside during the arrest, definitive testing often requires more controlled conditions to ensure accurate results are obtained. The jail setting also allows for the necessary documentation and recording of the tests, which is vital for any subsequent legal proceedings. Testing at a police precinct or local hospital may occur in some jurisdictions, but the jail is more commonly designated for standardized procedures related to DUI arrests.