Subpoena Ad Testificandum Law and Legal Definition

The term Subpoena ad testificandum signifies a formal document that orders a named individual to appear before a duly authorized body at a fixed time to give testimony. A court, Grand Jury, legislative body, or Administrative Agency uses a subpoena to compel an individual to appear before it at a specified time to give testimony. An individual who receives a subpoena but fails to appear may be charged with Contempt of court and subjected to civil or criminal penalties.

A subpoena ad testificandum is a court summons to appear and give oral testimony for use at a hearing or trial. Under the Uniform Rules of Criminal Procedure, the subpoena must state the name of the court and the title, if any, of the proceeding and must command each person to whom it is directed to attend and give testimony.