S.C. Code § 44-53-140
Whenever a holder of the privilege shall seek counselling, treatment, or therapy for any drug problem from a confidant, no statement made by such holder and no observation or conclusion derived from such confidant shall be admissible against such holder in any proceeding. The results of any examination to determine the existence of illegal or prohibited drugs in a holder's body shall not be admissible in any proceeding against such holder.
The privilege belongs to the holder and if he waives the right to claim the privilege the communication between the holder of the privilege and the confidant shall be admissible in evidence in any proceeding.
There is no privilege if the services of a confidant are sought to enable the holder of the privilege to commit or plan to commit a crime or a tort.
S.C. Code § 44-53-140