90 EVIDENCE GUIDES

Forensic toxicology, organized for careful answers.

Start with a scientific question or browse the seven subject areas. Every guide separates the analytical finding from the larger interpretation.

Analytical Methods

How laboratories separate, identify, confirm, and measure drugs, alcohols, and other compounds.

How collection, preservation, storage, and biological matrix affect what a result can mean.

Principles and limitations of blood, breath, and postmortem alcohol and volatile analysis.

Screening, confirmation, metabolites, emerging substances, and drug-specific interpretation.

The controls, performance studies, documentation, and review practices behind reliable testing.

Absorption, distribution, metabolism, elimination, timing, effects, and evidentiary limits.

Specimen selection, redistribution, decomposition, and the special limits of death investigation.