https://www.selleckchem.com/products/mk-8353-sch900353.html Plastinated tissues have proven to be stable and easily managed. They can also be used for examination under light and electron microscopes. The DNA extraction technique used here allowed us to obtain intact DNA from samples plastinated with silicone at room temperature, without previous fixing. This technique may allow tissue specimens to be preserved for retrospective studies of archived samples of normal and pathological anatomy in the fields of basic, clinical, forensic, and epidemiological sciences. CONCLUSIONS The extracted DNA was intact and suitable for use in subsequent applications. Obtaining whole DNA from plastinated samples using tissue preservation protocols that preserve the tissue for use in subsequent applications, like real-time PCR, opens up many possibilities, with applications in the basic and clinical sciences, epidemiology, and forensic science. The aim of this work was to develop and validate a liquid chromatography tandem mass spectrometry method for detecting sixty drugs and metabolites that are most commonly encountered in postmortem whole blood analysis. Although a large number of drugs were included in the panel, acceptance criteria for method validation were achieved. All calibration curves were found to be linear with coefficients of determination greater than 0.99. The limits of detection ranged from 0.2ng/mL to 1.0ng/mL and the limits of quantification range from 1.0ng/mL to 5.0ng/mL. Using three controls, within-run precision was 0.7%-10.3% and between-run precision was 0.6%-9.0%. Accuracy was ranged from 95.0%-104.1%. Matrix effects ranged from -15% to +22%. After excluding matrix effects, analytical recoveries ranged from 76% to 100%. Coefficients of variation for matrix effects ranged from 0.5%-13% and coefficients of variation for recovery ranged from 0.9%-13.0%. Over 1000 postmortem blood samples were analyzed. Among them, 435 cases (45%) tested positive for at least o