A Louisiana Subpoena in a criminal case is a court-issued document that requires a person to appear in court or to produce documents or other items. There are two main types of Louisiana Subpoenas in a criminal case: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum is a type of Louisiana Subpoena that orders a person to appear in court and bring with them specified documents or items. This type of subpoena is used to obtain evidence for a criminal case. A Subpoena Ad Testificandum is a type of Louisiana Subpoena that orders a person to appear in court to testify in a criminal trial. This type of subpoena is issued to compel a witness to appear in court and provide testimony. Both types of Louisiana Subpoena in a criminal case are binding and must be complied with. Failure to comply with a court-issued subpoena may result in criminal penalties.