How many days is drunk driving detention?

According to the provisions of China's Criminal Procedure Law, under normal circumstances, if you want to detain a criminal suspect or defendant, you need to go through the examination and approval of the organ with detention authority and need a criminal detention certificate, so it is very difficult to detain him on the spot. For drunk driving, it is necessary to wait for blood tests to obtain clear evidence of drunk driving, and the public security department at or above the county level will issue a criminal detention certificate before notifying the detention.