Regulationhistorical
49 CFR 40.277
Are alcohol tests other than saliva or breath permitted under these regulations?
Snapshot 2025-10-01 Government source
eCFR editorial compilationAuthoritative but unofficial
View source 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.