S.C. Code Ann. § 40-81-510: Substance abuse testing.

The commission has the authority to require a participant to submit to tests for the presence of unauthorized substances. The use of any drugs, alcohol, or stimulants, or injections in any part of the body, either before or during an event or exhibition, by or on behalf of any participant, is adequate grounds for disqualification of the license and the license of the person administering the same.