S.C. Code Ann. § 33-19-110: Purposes.

(a) Except to the extent authorized by subsection (b), a corporation may elect professional corporation status under Section 33-19-109 solely for the rendering of professional services, including services ancillary to them, within a single profession.

(b) A corporation may elect professional corporation status under Section 33-19-109 for the rendering of professional services within two or more professions, and for engaging in any lawful business authorized by Section 33-3-101, to the extent the combination of professional purposes or of professional and business purposes is authorized by the licensing law of this State applicable to each profession in the combination.