CFR > Title 49 > Subtitle B > Chapter II > Part 219 > Subpart D CFR > Title 49 > Subtitle B > Chapter II > Part 219 > Subpart D – Reasonable Suspicion Testing Current as of: 2024 | Check for updates | Other versions § 219.301 Mandatory reasonable suspicion testing § 219.303 Reasonable suspicion observations § 219.305 Prompt specimen collection; time limitations