What type of tests are administered if a driver is suspected of driving under the influence?

When a driver is suspected of driving under the influence, law enforcement has the authority to administer multiple types of tests to determine the driver's level of intoxication. These typically include blood, breath, and urine tests.

Breath tests are commonly used at the scene of the incident, as these can provide immediate results for blood alcohol content (BAC) through a breathalyzer. Blood tests are able to determine the presence of alcohol and drugs in the bloodstream and are often conducted at a medical facility. Urine tests can detect the presence of substances that may not be easily identifiable in breath or blood, particularly those that have longer detection windows.

This comprehensive approach is essential because different substances affect individuals in various ways and may be present in different forms in the body. Thus, having the option to use all three testing methods allows law enforcement to get a clearer and more reliable picture of whether a driver is under the influence and to what extent.