Saliva, urine, and hair testing each offer unique advantages and limitations in drug detection. Saliva tests provide rapid, on-site results but are limited to recent use. Urine tests detect a broader window of drug exposure with moderate accuracy and are widely used in roadside or workplace screening. Hair tests offer long-term drug history and high specificity but require laboratory processing. Comparing these methods helps law enforcement, forensic teams, and regulatory agencies select the appropriate testing type based on detection window, accuracy, sample type, and operational needs, ensuring reliable and legally defensible results.

Features:

• Saliva: fast, on-site, detects recent use

• Urine: moderate accuracy, widely used for screening

• Hair: long-term history, high specificity

• Guides selection of testing method for operational needs

Scope / Applications:

• Law enforcement and forensic investigations

• Workplace and drug rehabilitation screening

• Sample prioritization for laboratory confirmation

• Operational planning based on detection windows