title: False positives and negatives in routine testing for drugs of abuse.
authors.forename: A R
authors.initials: AR
authors.lastname: Forrest
mesh_terms: D005188:False Negative Reactions; D005189:False Positive Reactions; D008401:Gas Chromatography-Mass Spectrometry / Q000191:economics; D006801:Humans; D013287:Illicit Drugs / Q000032:analysis; D011329:Prisoners / Q000331:legislation & jurisprudence; D015813:Substance Abuse Detection / Q000331:legislation & jurisprudence / Q000379:methods; D006113:United Kingdom
chemical_list: D013287:Illicit Drugs