S.C. Code Ann. § 46-21-310
The Commissioner of Agriculture, either by himself or his duly authorized agent, shall inspect, examine and make analyses of and test any agricultural, vegetable or flower seeds sold, offered or exposed for sale or distribution within the State for seeding purposes, at such time and place and to such extent as he may determine. The rules for analyses shall conform to the best known methods of examining and testing agricultural, vegetable and flower seeds.
Before being offered for sale or distribution all seeds sold in this State shall first be examined and tested according to the provisions of this section.