Oliveira, Juliana Blume de, Bruno Pereira dos Santos, and Marcelo Dutra Arbo. “Valproic Acid Extraction Methods in Human Samples Using Gas Chromatography: A Review”. Drug Analytical Research 8, no. 1 (March 26, 2026): 3–12. Accessed July 25, 2026. https://seer.ufrgs.br/index.php/dar/article/view/138963.