A Louisiana Subpoena or Subpoena Ducks Cecum is a legal document issued by a court of law or other government authority that orders a person or business to appear in court or to produce documents or other tangible evidence. It is used in civil and criminal proceedings as a means of obtaining evidence necessary for a case. There are two types of Louisiana Subpoena or Subpoena Ducks Cecum: Subpoena Ad Testificandum and Subpoena Ducks Cecum. Subpoena Ad Testificandum is an order issued to compel a witness to appear in court to testify. It requires the witness to attend the proceedings, provide testimony, and sometimes produce documents as evidence. Subpoena Ducks Cecum is an order issued to compel a business or other entity to produce documents, records, or other tangible evidence for review or use in the proceedings. It requires the business or entity to provide the requested materials to the court.