March 29, 2014
Under California law, they can. But a new Supreme Court case says, maybe not. In that case, the police in Missouri took blood after a DUI stop from a man that would not consent. The evidence was eventually suppressed by the US Supreme Court. See link below:
Bottom line, if you refuse to take a blood or breath test (not a portable breath test) most police offices in California will not force a needle into you. Instead, they will say you “refused” and you will lose you driver’s license for 1 year. If the police believe you are drunk, they will still give you a DUI.