EVIDENCE LIBRARY
Hospital Blood Tests
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
Short answer: A 2026 laboratory study found that aerosols from several high-concentration delta-8 THC vaping products reduced the beating activity of human airway cilia under experimental conditions. The researchers also detected increased concentrations of an oxidation product, delta-8 THC quinone (Δ8-THCQ), after vaping distillates and disposable products. These findings identify a plausible mechanism of airway […]
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Oct 15, 2026
A controlled oral-cannabis study measured blood and oral-fluid cannabinoid concentrations after brownies containing 10, 25, or 50 mg THC.
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Oct 15, 2026
A 2026 model integrates BAC, EtG, EtS, and urine alcohol to compare drinking timelines. Explore its validation, limitations, and potential forensic applications.
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Oct 14, 2026
How gastric emptying, beverage strength, and meal conditions influence ethanol absorption and why simplified BAC assumptions can mislead forensic interpretation.
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Sep 26, 2026
A negative rapid urine drug screen does not always rule out exposure. Learn how panel scope, cutoffs, timing, specimen validity, and confirmation affect interpretation.
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Sep 26, 2026
Learn why rapid postmortem drug screens are preliminary and how specimen type, cutoffs, GC-MS, LC-MS/MS, and complete case records affect interpretation.
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Sep 26, 2026
Learn how dilution, contamination, and adulteration can affect urine drug screens, what specimen-validity tests measure, and which records matter.
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Sep 26, 2026
A source-cited matrix comparing on-site drug-testing research by device, specimen, setting, cutoff, confirmation method, and study limitation.
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Sep 26, 2026
Learn how methamphetamine isomers, inhalers, medications, metabolic precursors, and confirmatory methods affect interpretation of a positive result.
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Sep 25, 2026
An Estonian urine study highlights unexpected cychlorphine exposure, LC-Q-TOF-MS panel coverage, and the limits of self-reported detection times.
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