S.C. Code § 39-6-150
Actions rising out of this chapter must be commenced within three years after the cause of action accrues, except that if a liable person conceals the cause of action from the knowledge of the person entitled to bring it, the period prior to the discovery of his cause of action by the entitled person is excluded in determining the time limited for the commencement of the action. If a cause of action accrues against a person during the pendency against him of any civil, criminal, or administrative proceeding brought by the United States, or any of its agencies, pursuant to the antitrust laws, the Federal Trade Commission Act, or other federal act, or the laws of this State related to antitrust laws or to franchising, actions brought pursuant to this chapter may be commenced within one year after the final disposition of the civil, criminal, or administrative proceeding.
S.C. Code § 39-6-150