National Occupational Health Services

[ Occupational Testing | Medical Surveillance | Drug & Alcohol Testing ]

Call us toll-free... 800-900-6647

DOT Drug Screens

NOHS complies with the federal regulations of 49 CFR Part 40 as written by the U.S. government. All of our technicians are DOT certified for collection practices. The lab and the chain of custody forms also follow the government standards as stated in 49 CFR Part 40. Random, follow-up, reasonable cause, return to duty and pre-employment testing services are available.
National Occupational Health Services
Mailing Address
6848 East 41st Street
Tulsa, Oklahoma 74145
918-794-4777 (phone) 800-900-6647 (toll-free) 918-794-4777 (fax)