Meconium in the investigation of prenatal drug exposure
- Publisher:
- Elsevier
- Publication Type:
- Journal Article
- Citation:
- Clinica Chimica Acta, 2026, 579, pp. 120682
- Issue Date:
- 2026-01-15
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Fetal drug exposure remains a critical public health concern with both maternal and neonatal health implications. In clinical and forensic toxicology, meconium has emerged as a valuable alternative biological matrix to detect prenatal drug exposure. Use of meconium offers a longer detection window than maternal blood or neonatal urine, while enabling non-invasive postnatal collection. Furthermore, advances in analytical techniques, particularly in chromatography and mass spectrometry, have significantly enhanced the sensitivity and specificity of drugs and metabolites detection in meconium. These improvements have expanded its utility in neonatal screening, interventions in maternal care, and legal proceedings related to child protection. Emerging research into the physicochemical and biological mechanisms of xenobiotic incorporation into meconium has improved the interpretation of quantitative results and facilitated the identification of novel biomarkers. The growing application of meconium testing presents an opportunity to refine early intervention strategies, optimize prenatal care, and better characterize long-term neurodevelopmental and behavioral risks associated with in utero substance exposure. This review provides an integrative overview of meconium as an alternative biological matrix for diagnostics and monitoring of the exposure to licit and illicit substances by examining its formation and composition, followed by analytical approaches. It also discusses the implications of meconium toxicology for optimizing prenatal care, guiding neonatal interventions, and informing long-term risk assessment of neurodevelopmental outcomes following prenatal substance exposure.
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