Rafael Linden holds a degree in Pharmacy from the Federal University of Rio Grande do Sul, a Master’s in Pharmaceutical Sciences from the Federal University of Rio Grande do Sul, and a PhD in Cellular and Molecular Biology from the Pontifical Catholic University of Rio Grande do Sul. He is currently a Full Professor at Feevale University, where he teaches in the undergraduate programs in Pharmacy, Biomedical Sciences, and Medicine. He also serves as a permanent faculty member in the Graduate Program in Environmental Quality and the Graduate Program in Toxicology and Toxicological Analysis, for which he served as coordinator from 2016 to 2021. He is the leader of the Bioanalysis Research Group at Feevale University. He has served as Secretary-General of the Brazilian Society of Toxicology and as Chair of the Alternative Sampling Committee of the International Association of Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT) from 2019 to 2023, and was President of the 2019 IATDMCT World Congress. He is a member of the Brazilian Society of Toxicology (SBTOX), the International Association of Forensic Toxicologists (TIAFT), the International Association of Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT), and the Society of Hair Testing (SOHT). His expertise includes toxicological analysis, therapeutic drug monitoring, pharmacogenetics, and forensic toxicology. He works on the development and validation of