“DEVELOPMENT AND VALIDATION OF METHAMPHETAMINE ANALYSIS METHODS IN DRIED BLOOD SPOT SAMPLE USING GAS CHROMATOGRAPHY – MASS SPECTROMETRY” (2019) International Research Journal of Pharmacy, 10(8), pp. 18–24. Available at: https://irjponline.org/index.php/irjp/article/view/560 (Accessed: 16 August 2026).