Common Uses for Mouth Swab Drug Testing
Mouth swab drug testing may be used for a variety of testing programs depending on employer policies, agency requirements, and applicable regulations, including:
- Pre-employment drug testing
- Random employee testing
- Reasonable suspicion testing
- Post-accident drug testing
- Return-to-duty testing
- Follow-up testing
- Court-ordered drug testing
- Probation testing
The appropriate testing method always depends on the requirements of the requesting employer, agency, or program.
Detection Window
Unlike testing methods designed to identify historical drug use, mouth swab drug testing is primarily used to detect recent drug use. Detection times vary based on the substance tested, frequency of use, and individual factors, but oral fluid testing is generally most effective for identifying drug use within the previous several hours to approximately 24 to 48 hours.
This shorter detection window makes mouth swab testing a practical option when recent use is the primary concern.
What Drugs Can Be Detected?
Testing panels vary depending on employer or program requirements. Common substances tested include:
- Marijuana (THC)
- Cocaine
- Amphetamines
- Methamphetamine
- Opiates
- Phencyclidine (PCP)
Expanded testing panels may also be available depending on the needs of the testing program.
DOT Oral Fluid Drug Testing
The U.S. Department of Transportation now permits oral fluid drug testing under specific federal regulations. DOT-regulated employers must use qualified collectors, approved laboratories, and authorized oral fluid collection devices while following all applicable federal requirements.
Oral fluid testing provides another federally recognized collection option while maintaining the chain of custody standards required for DOT drug testing programs.