The Fifth Amendment would protect a defendant from having to give blood samples to the prosecution since it would be a form of self-incrimination as interpreted by the courts.

Fifth Amendment

A provision in the United States Constitution that guarantees various rights related to legal proceedings, including the right against self-incrimination and double jeopardy, as well as the right to due process.

Self-Incrimination

The act of exposing oneself to prosecution by being forced or voluntarily giving testimony or evidence that would reveal involvement in a crime.

Blood Samples

Biological specimens collected for diagnostic, research, or forensic purposes.