Nothing herein shall be construed to limit the prosecutorial power of a district attorney.
No provision of chapter sixty-six A, section one hundred and thirty-five of chapter one hundred and twelve, or any other provision of law relating to confidential data or confidential communications shall prohibit the department, by its appropriate employees, or any designated protective services agency, by its appropriate employees from testifying in any judicial proceeding pursuant to subsections (a) and (b) of section twenty, chapter two hundred and one, or chapter two hundred and nine A where the employee has acquired the information which is the subject of his testimony while conducting an assessment in accordance with section eighteen. Such testimony shall not include the identity of the reporter of abuse under section fifteen.
Mass. Gen. Laws ch. 19A, § 23