Is there an official DOT list of clinics offering drug and alcohol tests?

No. Unlike the list of labs assembled by the U.S. Department of Health and Human Services, there is no official certification for facilities offering DOT tests. Because of this, employers who are subject to Parts 382 and 40 will have to contact facilities and networks directly and inquire if they offer DOT testing.

The regulations require all agreements and arrangements (written or unwritten) between employers and collection sites to perform DOT drug and alcohol testing to include provisions requiring compliance with DOT drug and alcohol testing regulations, which includes meeting the site requirements, trained staff, approved equipment, and required forms.