Oral fluid testing is the hardest method to defeat โ collected directly under observation with no privacy concerns. Now approved by DOT, it's ideal for post-accident, reasonable suspicion, and situations where recent use matters most.
Collection is observed directly, eliminating the possibility of specimen substitution or adulteration.
Saliva tests detect drugs used within the past 24โ48 hours โ ideal for post-accident and reasonable suspicion scenarios.
Collection can be done anywhere โ in the field, at a worksite, or roadside โ with no need for a private collection facility.
The DOT finalized oral fluid rules in 2023, making it an approved specimen type for federally regulated testing programs.
| Feature | Oral Fluid | Urine | Hair |
|---|---|---|---|
| Detection Window | 24โ48 hrs | 1โ30 days | Up to 90 days |
| DOT Approved | โ Yes | โ Yes | โ No |
| Observed Collection | โ Always | Optional | โ Always |
| Tamper Resistant | โ Very High | Moderate | โ High |
| On-Site Capable | โ Yes | Limited | โ Lab Only |
| Court Accepted | โ Yes | โ Yes | โ Yes |
| Best For | Post-accident | General screening | Custody/History |
Fast, discreet, and impossible to defeat. Available for both DOT and non-DOT programs.