S.C. Code Ann. § 16-13-470
(A) It is unlawful for a person to:
(5) sell adulterants which are intended to be used to adulterate a urine or other bodily fluid sample for the purpose of defrauding a drug or alcohol screening test.
Intent is presumed if a heating element or any other device used to thwart a drug-screening test accompanies the sale, giving, distribution, or marketing of urine or if instructions which provide a method for thwarting a drug-screening test accompany the sale, giving, distribution, or marketing of urine.
(B) A person who violates a provision of subsection (A):