S.C. Code Regs. § § 81-50
The process and procedure under Articles 1 through 4 shall be as summary as reasonably may be. Amendments to any complaint, notice, answer, objection, return, report or order may be made at any time prior to final order of the Board. Any party affected by such amendment shall be given reasonable opportunity to meet any new matter presented thereby. No investigation or procedure shall be held to be invalid by reason of any non-prejudicial irregularity or for any error not resulting in a miscarriage of justice. Articles 1 through 4 shall be liberally construed for the protection of the public and the medical profession and shall apply to all pending complaints, investigations and petitions whether the conduct involved occurred prior or subsequent to the effective date of Articles 1 through 4. To the extent that application of Articles 1 through 4 to such pending proceedings may not be practicable, the procedure in force at the time Articles 1 through 4 became effective shall continue to apply.
Every communication, whether oral or written, made by or on behalf of any complainant to the Board or any hearing panel or member thereof pursuant to Articles 1 through 4, whether by way of complaint or testimony, shall be privileged; and no action or proceeding, civil or criminal, shall lie against any such person, firm or corporation by or on whose behalf such communication shall have been made by reason thereof.
S.C. Code Regs. § 81-50