(2) The defendant fails to file a written objection with the court, with a copy to the State, at least five business days before the proceeding that the defendant objects to the introduction of the report into evidence.
If the defendant's attorney of record, or the defendant if that person has no attorney, fails to file a written objection as provided in this subsection, then the objection shall be deemed waived and the report shall be admitted into evidence without the testimony of the analyst. Upon filing a timely objection, the admissibility of the report shall be determined and governed by the appropriate rules of evidence.
Nothing in this subsection precludes the right of any party to call any witness or to introduce any evidence supporting or contradicting the evidence contained in the report.