Mo. Rev. Stat. § 337.639
Nothing in sections 337.600 to 337.639 shall be construed to prohibit any person licensed under the provisions of sections 337.600 to 337.639 from testifying in court hearings concerning matters of adoption, adult abuse, child abuse, child neglect, or other matters pertaining to the welfare of children or any dependent person, or from seeking collaboration or consultation with professional colleagues or administrative supervisors on behalf of the client.
(L. 1989 H.B. 738 & 720 § 14)
Effective 7-1-90