EVIDENCE LIBRARY
Source-supported guides to postmortem specimens, redistribution, stability, preservation, toxicology interpretation, and evidentiary limitations.
Oct 15, 2026
Distinguish unavailable, untested and undetected specimens. Learn why changing case counts and missing paired blood limit postmortem methamphetamine comparisons.
Read guideSep 24, 2026
Brain tissue can be valuable when postmortem blood is unavailable or compromised, but brain–blood ratios and tissue concentrations require matrix-specific validation and cautious interpretation.
Read guideSep 22, 2026
Higher alcohols can support investigation of microbial ethanol formation, but organism-specific models require validation, uncertainty, and the complete postmortem record.
Read guideSep 21, 2026
Central-to-peripheral blood ratios can describe postmortem concentration differences, but they are not universal correction factors for reconstructing antemortem drug levels. This guide explains why.
Read guideSep 21, 2026
Why vitreous humor can corroborate postmortem alcohol testing without supplying an exact individual blood-alcohol conversion.
Read guideSep 21, 2026
Why therapeutic, toxic and fatal postmortem drug ranges overlap—and how specimen site, redistribution, tolerance, and co-intoxicants change interpretation.
Read guideSep 21, 2026
Bromazolam is an emerging designer benzodiazepine increasingly encountered in forensic casework. This guide explains analytical detection, blood and urine interpretation, postmortem redistribution, polydrug findings, and the limits of concentration-based conclusions.
Read guideSep 18, 2026
Postmortem methamphetamine can differ across heart, peripheral blood, vitreous, and tissues. Learn why published ratios are evidence—not universal correction factors.
Read guideSep 8, 2026
Compare central and peripheral postmortem blood, collection artifacts, redistribution, and the records needed to interpret toxicology results.
Read guideSep 8, 2026
Postmortem ethanol may reflect drinking, microbial formation, or both. Learn how matrix, collection, preservation, and biomarkers shape interpretation.
Read guide