Conclusion:
Yes. The Supreme Court held that a state forensic analyst's lab report that is prepared for use in a criminal prosecution is subject to the demands of the Sixth Amendment's Confrontation Clause. With Justice Antonin G. Scalia writing for the majority and joined by Justices John Paul Stevens, David H. Souter, Clarence Thomas, and Ruth Bader Ginsburg, the Court reasoned that the lab reports constitute affidavits which fall within the "core class of testimonial statements" covered by the Confrontation Clause. Therefore, when Mr. Melendez-Diaz was not allowed to confront the persons who created the lab reports used in testimony at his trial, his Sixth Amendment right was violated.
Justice Thomas wrote a separate concurring opinion, emphasizing that he thought the Confrontation Clause was only implicated by statements made outside the courtroom when they are part of "formalized testimonial materials." Justice Anthony M. Kennedy dissented and was joined by Chief Justice John G. Roberts, and Justices Stephen G. Breyer and Samuel A. Alito. He criticized the majority for so cavalierly dispensing with the long held rule that scientific analysis could be introduced into evidence without testimony from the analyst who produced it.
