Thano Peratis was a registered nurse at the Parker Center jail who drew O.J. Simpson's blood. Because Peratis was unavailable at the criminal trial, jurors received his prior testimony, including grand-jury testimony read from the transcript and videotaped preliminary-hearing testimony. Defense attorneys later challenged a videotaped statement over blood-quantity impeachment and a reported fourteen-minute gap, characterizing the interview as staged and prepared to support the prosecution's position; Peratis also appeared as a witness in the civil proceedings.