The urine drug test is the workhorse of workplace and clinical screening — fast, affordable, and the only method DOT accepts. LabX confirms every presumptive positive by LC-MS/MS, so a urine result is more than a cup color-change.
Detection windows
Most drugs are detectable in urine for 1–4 days; chronic marijuana use can be detected for weeks. This "recent use" window is exactly what employers want for random and post-accident testing.
Supervised vs. unsupervised collection
An unobserved collection is convenient; an observed / supervised collection removes the tampering risk that undermines a result. LabX offers observed collection for programs that need defensibility. See why supervised screening protects your workplace.
Order a kit → Set up an employer account
Common questions
How long do drugs stay in urine?
Typically 1–4 days for most substances; chronic THC can persist for weeks.
Is a urine test accurate?
A screened urine sample with LC-MS/MS confirmation is highly accurate and defensible.