Development, Validation, and Application of a Novel Multi-Analyte High-Resolution Gas Chromatography-Mass Spectrometry (HRGC-MS) Method for the Quantification of Opioid Derivatives, Including Heroin, Morphine, and Fentanyl, in Biological Matrices with Enh. Journal of Carcinogenesis, [S. l.], v. 24, n. 4s, p. 1035–1048, 2025. DOI: 10.64149/J.Carcinog.24.8s.1035-1048. Disponível em: https://carcinogenesis.com/index.php/JOC/article/view/1391. Acesso em: 7 dec. 2025.