title: Testing employees.
authors.affiliation: Policy + Education Services Concateno Medscreen Harbour Quay 100 Preston's Road London E14 9PH. lindsay.hadfield@Medscreen.com
authors.forename: Lindsay
authors.initials: L
authors.lastname: Hadfield
mesh_terms: D006801:Humans; D016272:Occupational Health; D015813:Substance Abuse Detection / Q000379:methods* / Q000639:trends; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000378:metabolism; D017132:Workplace