A Subpoena to Testify Before Grand Jury is a legal document issued by a court or other authorized government entity. It orders an individual to appear at a specific time and place to testify before a grand jury. The grand jury is an investigative body that must decide whether to bring criminal charges against an individual or organization. There are two types of Subpoena to Testify Before Grand Jury: 1. Subpoena ad Testificandum: This type of subpoena orders an individual to appear and testify before a grand jury. 2. Subpoena Ducks Cecum: This type of subpoena orders an individual to appear and produce documents or other tangible evidence for the grand jury's review. A Subpoena to Testify Before Grand Jury must be served to the individual by a governmental official or private process server. The recipient must comply with the subpoena or face potential consequences, including fines and/or jail time.