Table of Contents   Detection Windows for Benzodiazepines: Urine: 3-6 weeks (depending on type and usage) Blood: 6-48 hours for most benzos Saliva: 1-10 days Hair: Up to 90 days Factors affecting detection time: Type of benzodiazepine, frequency of use, dosage, metabolism, age, liver function, and body composition. If you’re asking “how long do […]