Maryland Family Law Section 13-105
§ 13-105.
  Before the State's Attorney conducts an inquiry under § 13-104 of this title, the State's Attorney shall notify the accused individual in writing of:
    (1)   the time and place of the inquiry;
    (2)   the accused individual's right to appear at the inquiry and to produce evidence or information that relates to the matters examined; and
    (3)   the accused individual's right to testify if the individual:
      (i)   notifies the State's Attorney of the individual's desire to testify; and
      (ii)   signs a waiver that permits the individual's testimony to be used against the individual in any later trial that arises from the complaint.