TBA Law Blog


Posted by: Azya Thornton on Feb 2, 2026

More than 400 people charged with driving under the influence in 2024 after being pulled over by Tennessee Highway Patrol (THP) troopers had bloodwork that tested negative for drugs and alcohol, the Daily Memphian reports. The report shows that 419 of 16,883 DUI-related blood samples submitted to Tennessee Bureau of Investigation (TBI) crime labs last year — about 2.5% — detected no intoxicants. TBI officials said negative toxicology results do not necessarily mean a driver was unimpaired, noting some substances may not be detected. THP Col. Matt Perry told lawmakers the arrests were legal and based on observed signs of impairment, not quotas. The issue gained legislative attention after a high-profile Giles County arrest that was later dismissed, leading to a 2025 law requiring TBI to publicly report data on these cases.