| Aspect | Drug Testing | Drug Screening |
|---|
| Purpose | Detect specific drugs or metabolites in samples for legal, medical, or employment reasons | Initial assessment to identify potential drug use, often as a preliminary step |
| Methods | Laboratory analysis (urine, blood, hair, saliva) | Rapid tests (urine dipsticks, saliva tests) |
| Certifications | Often requires lab certifications and trained personnel | Usually performed with quick, onsite tests |
| Work Environment | Laboratories, medical facilities, testing centers | Workplaces, clinics, or on-site testing locations |
Drug Testing involves detailed laboratory analysis to confirm specific drug presence, while Drug Screening is a quick initial test to identify potential drug use. Both are used in employment and legal contexts but differ in complexity and purpose.