Welcome to NSC

National Screening Corporation (NSC) is a premier wholesale provider of accurate, simple to use, drug and alcohol and Covid-19 testing diagnostics. Our diagnostic products are FDA 510(k)-Cleared and CLIA-waived. We also provide legally defensible laboratory screening and confirmation services for urinalysis, oral fluids, and hair. We serve a wide range of industries, including workplace safety, staffing, construction, oil and gas, transportation, law enforcement, probation & parole, healthcare, and we offer reseller/distribution partnerships for qualifying providers.​