title: Is there a 'gold standard' for drug detection in pregnancy?
authors.forename: D L
authors.initials: DL
authors.lastname: Langkamp
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008470:Meconium / Q000737:chemistry*; D011237:Predictive Value of Tests; D011247:Pregnancy; D015995:Prevalence; D015813:Substance Abuse Detection / Q000379:methods*; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000652:urine