California state law does not impose any penalties for refusing a chemical test for drugs or alcohol up to the moment of arrest. A suspected impaired driver has no legal obligation to perform field sobriety tests or submit to a preliminary alcohol screening (PAS) unless the driver is currently on probation for a prior DUI offense or is under the age of 21. However, once an arrest occurs, the driver must submit to an evidentiary DUI chemical test. This will typically take place at the police station, or at a hospital or other medical clinic. Because a blood draw, as opposed to a breath test, is a search under the law, a person can refuse it; however, officers will likely seek and obtain a warrant to take a suspect’s blood by force if necessary. This is an unpleasant and dangerous experience that will result in a longer suspension of one’s driving privilege and is not recommended.