If you need to re-new your D.O.T. Physical or take a D.O.T. drug screen or alcohol test, walk in to any of our six locations. We have certified collectors for all your drug screening and collection needs. We work with third party administrators from across the nation and we use certified laboratories. We have a registered Medical Review Officer on staff. Our staff is trained to handle paperwork and billing for TPA and in-house services. Please feel free to call 281-496-5311 ext.1235 for further information.