When you are arrested for a DUI you have the choice of a breath or blood test, and these tests are to be administered to you at no cost. However, many southern California hospitals are sending bills in the neighborhood of $300 to those persons that were arrested for DUI and elected the blood test.
This is an illegal charge. The arresting agency is responsible for paying the blood draw fee, not the arrestee. If you ignore the bill, the hospital is sending the matter to collections and then off to the crediting reporting agencies. This may be a violation of your consumer rights.
If you are convicted, the courts levy lab fees as part of your fine and court fees. If you are arrested for DUI you should immediately contact an attorney to protect your rights.