IME you are served a subpoena to testify to specific information that they think you have, and if you can provide it prior to the date of testimony, you don't h

IME you are served a subpoena to testify to specific information that they think you have, and if you can provide it prior to the date of testimony, you don't have to show up. Suspect a warrant would be if they wanted to take something in your control, but I've never been subject of that kind of thing.