Colby JM, Adams BC, Morad A, Presley LD, Patrick SW. Umbilical Cord Tissue and Meconium May Not Be Equivalent for Confirming in Utero Substance Exposure. The Journal of pediatrics. 2019 Dec;205(205). 277-280. PMID: 30342870 [PubMed] PMCID: PMC6348119 NIHMSID: NIHMS1509949.
In a retrospective study of 501 neonates with potential in utero substance exposure, the drug detection performance of a commercially available umbilical cord tissue toxicology test was evaluated against a commercially available gold standard meconium toxicology test. Drugs detected in paired meconium and umbilical cord tissue samples were often discordant.