How long a drug shows up on a urine test depends on the substance, how much and how often it was used, and the cutoff level of the test. The chart below gives approximate detection windows for the substances our cups and strips screen for.
Urine detection times chart
| Substance | Code | Typical detection window | Notes |
|---|---|---|---|
| Alcohol (EtG) | EtG | Up to about 1 to 3 days | Heavy drinking can be detected for up to about 80 hours. |
| Amphetamine | AMP | 1 to 3 days | |
| Methamphetamine | MET | 1 to 4 days | |
| Cocaine | COC | 2 to 4 days | Heavy, frequent use can extend this. |
| Marijuana | THC | 1 to 3 days (single use) 5 to 7 days (a few times a week) 10 to 30+ days (daily use) |
Stored in body fat, so heavy users test positive much longer. |
| MDMA / ecstasy | MDMA | 1 to 3 days | |
| Benzodiazepines | BZO | 1 to 7 days | Long-acting benzos with regular use can be detected for several weeks. |
| Barbiturates | BAR | 1 to 3 days | Long-acting barbiturates can be detected for up to about 3 weeks. |
| Buprenorphine | BUP | Up to about 1 week | |
| Methadone | MTD | 2 to 7 days | Longer with daily dosing. |
| Oxycodone | OXY | 1 to 3 days | |
| TRA | TRA | 1 to 4 days | |
| Gabapentin | GAB | 1 to 3 days | |
| PCP | PCP | About 1 to 2 weeks | Chronic use can extend this further. |
| Ketamine | KET | 2 to 4 days | |
| K2 / Spice | K2 | 1 to 3 days | Heavy, frequent use can extend this to several weeks. |
| Kratom | KRA | Up to about 1 week | Research is limited and results vary widely. |
| Psilocybin | PSY | 1 to 3 days | |
| Nicotine (cotinine) | COT | 2 to 4 days | Longer for heavy smokers. |
These are general ranges from published references, not guarantees. Individual results vary.
What changes how long a drug is detectable
- How often it is used. This is the biggest factor. A single use clears far faster than daily use, especially for THC.
- How much was used. Larger doses take longer to fall below the cutoff.
- Body fat. Fat-soluble substances like THC are stored and released slowly.
- Metabolism, age and health. Liver and kidney function affect how quickly the body clears a substance.
- Hydration. Very dilute urine can push a result below the cutoff. This is why many testers check specific gravity and creatinine, as the 20 panel cup does.
- The test's cutoff level. A lower cutoff detects smaller amounts, so it can detect use for longer. Each of our products lists its cutoff in ng/mL.
Urine vs. other test types
Urine is the most common testing method because it balances cost, a useful detection window and simple collection. Saliva tests generally detect only very recent use (hours to about 2 days), while hair tests can look back around 90 days but cost more and do not detect very recent use.
Testing at the right time
Because most substances clear within a few days, random and frequent testing catches more use than scheduled testing. That is why sober living homes and treatment programs often test weekly at unpredictable times. See our guides for sober living homes and treatment centers.
Ordering for a house, program or company?
Volume pricing starts at 25 units and gets better at 50, 75 and 100. For standing orders or 500+ units, call (866) 407-2832 or email sales@drugtestsdirect.com for a quote.
Request a Bulk QuoteFrequently asked questions
How long does THC stay in urine?
Roughly 1 to 3 days after a single use, about a week for use a few times a week, and 10 to 30 days or more for daily users.
How long does alcohol show up on a urine test?
Alcohol itself clears within hours, but EtG, a marker of alcohol use, can be detected for up to about 80 hours after heavy drinking. Read our guide to EtG testing.
Can drinking a lot of water make a test negative?
Very dilute urine can drop below the cutoff. Tests with specific gravity and creatinine checks help identify diluted samples.
Are these detection times exact?
No. They are approximate ranges. Results depend on the person, the amount and frequency of use, and the test's cutoff level.
Instant urine tests give preliminary results. Confirm any preliminary positive with a laboratory test (such as GC/MS) before taking action. Always follow the package insert.