How Long Does Alcohol Stay in Your System? (Breath, Blood, Saliva & Urine Detection)
A comprehensive medical breakdown of biological detection windows across breath, blood, saliva, urine (free ethanol vs EtG metabolites), and hair follicles.
Evidence-based, peer-reviewed educational resources designed to demystify alcohol pharmacokinetics, standard drink definitions, biological clearance rates, and legal frameworks across the United States and United Kingdom.
A comprehensive medical breakdown of biological detection windows across breath, blood, saliva, urine (free ethanol vs EtG metabolites), and hair follicles.
Why caffeine creates the dangerous illusion of sobriety ("wide-awake drunk") without accelerating hepatic ADH enzyme clearance or restoring motor reflexes.
Understand the official NIAAA definition of 14.0 grams of pure ethanol and calculate true drink counts across craft beer, table wine, and high-proof spirits.
The definitive UK guide to calculating units: imperial pints (568 ml), pub wine measures (175 ml vs 250 ml), spirit pours, and converting UK units to US drinks.
Why hundreds of drivers are arrested the morning after a night out. How liver enzymes metabolize alcohol at a constant zero-order rate whether awake or asleep.
An authoritative legal comparison between Scotland’s 50 mg/100ml limit (SSI 2014/328) and England, Wales & Northern Ireland’s 80 mg/100ml limit under the Road Traffic Act 1988.
Complement your reading with our client-side pharmacokinetic calculators. Every tool models metabolic ranges and zero-order hepatic elimination without storing your personal data.
BAC-CALC.COM does not track your drinks or store personal data on any server. We only use localStorage on your device to remember your regional units and theme preference.