S.C. Code Ann. § 20-7-1780
(D) The provisions of this section must not be construed to prevent any adoption agency from furnishing to adoptive parents, biological parents, or adoptees nonidentifying information when in the sole discretion of the chief executive officer of the agency the information would serve the best interests of the persons concerned either during the period of placement or at a subsequent time nor must the provisions of Subarticles 7 and 9 of Article 11 of Chapter 7 of Title 20 be construed to prevent giving nonidentifying information to any other person, party, or agency who in the discretion of the chief executive officer of the agency has established a sufficient reason justifying the release of that nonidentifying information. As used in this subsection "nonidentifying information" includes but is not limited to the following:
(E)
(1) The public adoption agencies responsible for the placement shall furnish to an adoptee the identity of the adoptee's biological parents and siblings and to the biological parents and siblings the identity of the adoptee under the following conditions:
(F)