Is there a time limit on when blood is drawn from an auto accident for alcohol testing?

In the United States, individual state laws govern blood draw after a car accident for alcohol testing. While in most states, the police have the authority to initiate a blood draw or test for alcohol, there are specific time frames within which this must be done depending on the state. Generally, the time limit ranges between 2 and 4 hours after an accident. However, it's essential to note that these timeframes can vary, and it's best to consult the specific laws of the state where the accident occurred for the exact time limits.