StacksVerified U.S. regulatory reference

49 CFR §40.277

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
No, other types of alcohol tests (e,g., blood and urine) are not authorized for testing done under this part. Only saliva or breath for screening tests and breath for confirmation tests using approved devices are permitted.