Saliva Drug Test Detection Timetable
Oral fluid testing, sometimes referred to as saliva drug testing, has grown in popularity as a way to identify recent drug use. Saliva tests are quick, easy, and inexpensive compared to urine or blood tests, making them ideal for random testing programs, roadside checks, and workplace screenings.
The length of time that various substances can be found in saliva, the variables that impact detection times, and a comprehensive drug detection timeline for reference are all covered in this guide.
How Saliva Drug Testing Works
This drug tests look for the parent medication or its byproducts in the mouth. A sample is taken from the mouth using a swab, and it is subsequently examined in a lab or using an immediate drug test kit. Results are frequently obtained in a matter of minutes.
Advantages of Saliva Drug Testing:
- Many tests provide results within 5–10 minutes.
- No need for restrooms or privacy concerns.
- Samples are collected under direct observation.
- Ideal for identifying impairment at the time of testing.
Saliva Drug Test Detection Timetable
A general guide to the duration of detectable levels of common substances in saliva is provided below. The type of drug, dosage, frequency of use, metabolism, and personal health can all affect actual times.
| Drug / Substance | Approximate Detection Time in Saliva |
| Marijuana (THC) | Up to 24 hours (chronic use: up to 72 hrs) |
| Cocaine | 24–48 hours |
| Amphetamines | 24–48 hours |
| Methamphetamine | 24–72 hours |
| MDMA (Ecstasy) | 24–48 hours |
| Opiates (Heroin, Morphine) | 24–48 hours |
| Codeine | 24–48 hours |
| Benzodiazepines | 24–48 hours |
| Barbiturates | 24–48 hours |
| Phencyclidine (PCP) | Up to 3 days |
| Alcohol |
6–12 hours |
Factors Affecting Detection Time
Several factors can change how long drugs remain detectable in saliva:
- Regular users may have longer detection windows.
- Higher amounts stay detectable longer.
- Faster metabolism can reduce detection times.
- Stronger drugs may linger longer in the system.
- Brushing and rinsing may slightly reduce residue but not eliminate detection.
When Saliva Testing is Used
- Workplace drug screening – Especially for safety-sensitive jobs.
- Roadside DUI checks – To detect recent drug or alcohol use.
- Post-incident testing – After accidents or workplace incidents.
- Random drug testing – For ongoing compliance programs.
This drug tests are most effective for detecting recent drug use (within the past 48 hours) also quick, easy, and less invasive than urine or blood tests. Detection times vary by drug type, frequency of use, and individual factors.