S.C. Code Ann. § 14-7-1030: Time for making objections to jurors.

All objections to jurors called to try prosecutions, actions, issues, or questions arising out of actions or special proceedings in the various courts of this State, if not made before the juror is impaneled for or charged with the trial of the prosecution, action, issue, or question arising out of an action or special proceeding, is waived, and if made thereafter is of no effect.