Quick answer
Cocaine shows up in urine for about 2–4 days after occasional use and for up to 1–3 weeks after heavy, long-term use. It is detectable in blood and saliva for about 1–2 days and in hair for up to about 90 days.
How long will it show up on a drug test?
Pick a substance, test type and how often it was used. Estimates are based on published research.
1 Substance
2 Type of test
3 How often
Usually detectable in urine · Cocaine · once or occasionally
About 2–4 days
- What the test looks for
- Benzoylecgonine (BZE), the main cocaine metabolite
- On standard drug tests?
- Yes — on standard 5-panel, 10-panel and federal workplace tests (150 ng/mL screening cutoff).
- How fast it clears
- Cocaine itself has a half-life of about 1.5 hours; its metabolites last much longer.
Estimates, not a guarantee. Dose, how often and how long someone has used, body fat, hydration, metabolism and the lab’s cutoff all change the window. No calculator can tell you how a specific test will come out.
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How long does cocaine stay in your urine?
Cocaine itself only lasts a few hours in the body. Drug tests look for benzoylecgonine (BZE), the main metabolite, which lasts much longer.
| Test | Once or occasionally | Heavy or long-term use |
|---|---|---|
| Urine | About 2–4 days | Up to 1–3 weeks |
| Blood | Up to about 1–2 days | Up to about 2 days |
| Saliva | Up to about 1–1.5 days | Up to about 2 days |
| Hair | Up to about 90 days | Up to about 90 days |
After occasional use, urine tests usually stay positive for about 2–4 days. With heavy, long-term use, BZE has been detected for 10–22 days, because the metabolites build up and take longer to clear. Labs using very sensitive methods with low cutoffs can detect use for longer than standard tests.
How long does cocaine stay in your blood and saliva?
Cocaine has a half-life of about 1.5 hours, so the drug itself is gone from the blood within hours. Its metabolites can be found in blood for about 1–2 days. Saliva tests usually detect cocaine and BZE for up to about 1–1.5 days after a single use.
Does cocaine show up in hair tests?
Yes. Hair testing can show cocaine use over about the past 90 days and is one of the more reliable uses of hair testing. Results start showing up about a week after use, once the hair has grown out.
Does cocaine show up on a standard drug test?
Yes. Cocaine is on every standard panel, including 5-panel and federal workplace tests, with a federal screening cutoff of 150 ng/mL. Cocaine screens are very specific and rarely cross-react with other medicines. Coca-leaf tea can cause a true positive, while the local anesthetics dentists use (like lidocaine) do not.
Cocaine and fentanyl
Much of the illegal cocaine supply is now contaminated with fentanyl, and many overdose deaths involve both. Someone who uses cocaine may test positive for fentanyl without knowing they took it. Carrying naloxone (Narcan) and never using alone can save a life.
What affects how long cocaine stays in your system?
- How much and how often. A single use clears far faster than daily or heavy use, which can build up in the body.
- The test and its cutoff. Every test has a cutoff level. Labs using lower cutoffs or more sensitive methods (like LC-MS/MS) can detect use for longer.
- Metabolism, age and health. Liver and kidney function, age, genetics and other medications change how fast a drug is broken down.
- Body fat and hydration. Fat-soluble drugs linger longer in people with more body fat. Diluted urine can lower concentrations, and labs check for dilution.
- Using with alcohol. Drinking while using cocaine creates cocaethylene, a longer-lasting and more toxic compound.
When a drug test is the least of your worries
If you are looking this up because you are worried about an upcoming test, it may be worth asking a bigger question: is your use starting to cost you something, such as your job, your health, money or relationships? Needing to plan around a drug test is itself a sign some people use to decide it is time for help.
Treatment is more flexible than most people expect. Outpatient programs let you keep working, and many plans cover rehab under federal parity rules. You can get matched with up to 3 programs in about a minute, browse rehab centers by state, or call the number on this page to talk it through. It is free and confidential.
Detection times for other substances
See every substance side by side on our drug detection times chart.
Frequently asked questions
How long does cocaine stay in your urine?
About 2–4 days after occasional use. Heavy, long-term use can be detectable for 1–3 weeks.
How long does cocaine stay in your blood?
Cocaine itself clears within hours, and its metabolites are usually detectable in blood for about 1–2 days.
Can a hair test detect cocaine?
Yes. Hair tests can detect cocaine use over about the past 90 days, though not use from the last week or so.
Can anything else cause a positive cocaine test?
Very little. Cocaine screens are highly specific. Coca-leaf tea can cause a true positive, but dental anesthetics like lidocaine and novocaine do not.
What does cocaine addiction treatment look like?
There are no FDA-approved medications for cocaine use disorder yet, so treatment centers on behavioral therapies like CBT and contingency management, in outpatient or residential programs. See our cocaine addiction treatment guide.
Sources
- Moeller KE et al. Clinical Interpretation of Urine Drug Tests. Mayo Clinic Proceedings (2017)
- SAMHSA. TAP 32: Clinical Drug Testing in Primary Care (2012)
- SAMHSA. TIP 63: Medications for Opioid Use Disorder (2021)
- Jufer RA et al. Elimination of cocaine and metabolites in plasma, saliva, and urine. J Anal Toxicol (2000)
- Nickley J et al. A sensitive assay for urinary benzoylecgonine shows longer detection. Drug Test Anal (2017)
- Hadland SE, Levy S. Objective Testing: Urine and Other Drug Tests. Child Adolesc Psychiatr Clin N Am (2016)
- HHS/SAMHSA. Mandatory Guidelines for Federal Workplace Drug Testing Programs: Authorized Testing Panels. Federal Register (Jan 2025)
