The Massachusetts Supreme Judicial Court sided with a defendant accused of driving under the influence, reversing the trial court’s denial of his motion to suppress the results of a blood-alcohol test because he had not given consent.

Eric J. Moreau is accused of driving under the influence and negligent operation of a motor vehicle after his vehicle allegedly collided with a tree in September 2020. He was transported to a hospital, and police gave medical personnel a notice to preserve any blood that might be drawn during treatment, according to the court’s opinion filed Friday.