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Malik Schoffner

Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, NY, USA.

1 paper in the library · 2 citations · publishing 2025

Papers

Development and validation of an analytical method for the determination of select 4-position ring-substituted tryptamines in plasma by liquid chromatography–tandem mass spectrometry

Journal of Analytical Toxicology May 26, 2025 Malik Schoffner, Vamshikrishna Reddy Sammeta, Marilyn Naeem et al. 2 citations

A liquid chromatography–tandem mass spectrometry method was developed and validated to detect and quantify six 4-position ring-substituted tryptamines in plasma, including psilocybin, psilacetin, 4-Pro-DMT, and their metabolites psilocin and 4-HO-DPT. The method showed linearity from 0.5 to 100 ng/mL for most analytes (psilocybin from 5 to 100 ng/mL), with acceptable bias and imprecision. Matrix effects were minimal except for ion enhancement of psilocin and psilocybin. Extraction efficiency was about 50%. Applied to plasma from male rats given psilacetin, psilacetin was not detected, and psilocin concentrations ranged up to 32.7 ng/mL. The method provides a robust tool for future research and clinical applications.