Welcome to NSC

National Screening Corp. (NSC) is a trusted U.S. supplier of wholesale drug testing solutions, serving laboratories, distributors, and workplace testing programs nationwide. Our product portfolio includes oral fluid drug tests, rapid drug test cups, and dip cards designed for fast, reliable screening in clinical, workplace, and compliance environments. Supported by an integrated manufacturing and supply network, we provide distributors with dependable product availability, consistent quality, and highly competitive wholesale pricing designed to foster long-term partnerships.