Queensland Consolidated Regulations Queensland Consolidated RegulationsWhere, in any certificate made by him or her for any purpose where he or she is required under the Act to make a certificate consequent upon the providing of a specimen of breath for the purposes of analysis by a breath analysing instrument or a specimen of blood for a laboratory test, or, as the case may be, the failure to provide any such specimen, a health care professional or authorised police officer certifies that he or she has given all necessary directions as required by the relevant provisions of the Act in connection with the provision of whatever specimen was required in the case in question, and that a copy of a certificate signed as required by the Act was delivered to such person to whom by the Act it was required to be given, such certificate shall be conclusive evidence until the contrary is proved of the matters so certified.