How Long Does Cocaine Stay in Your System?

Cocaine is a very fast-acting central nervous system stimulant that produces an intense but short-lived euphoric high, lasting for roughly 15 minutes to an hour.

Cocaine levels peak in the blood an average of 30 minutes after it’s ingested, which usually occurs via smoking, snorting, or injection. The speed of onset of cocaine’s physiological effects, as well as the total duration of action, is influenced by the method of use.

  • Intravenous use or smoking: Effects felt in seconds, but dissipate quickly.
  • Snorting: Effects felt within minutes, but persist for as long as a half hour.
  • Oral ingestion: Onset and duration of effects felt within and over the course of 20-90 minutes.

Other factors include the amount taken at once, individual body chemistry (e.g., rate of drug metabolism), and how long and heavily the individual uses it (which will determine the extent of any tolerance, if present). Though it takes time for the levels of the drug to peak, some effects may be felt almost immediately, especially when it is injected or smoked. This initial high is often referred to as a rush. This fades after a short period of time, resulting in an unpleasant crash. The cycle of high, crash, and then seeking more of the drug to counter the crash can easily lead to an increased tolerance and eventually addiction. According to the National Survey on Drug Use and Health, more than 900,000 people in the United States met the criteria for a cocaine use disorder – more commonly referred to as a cocaine addiction – in 2014.

Cocaine speed of effects and length of detection in the body

How Cocaine Is Detected on Drug Tests


Cocaine’s half-life is roughly one hour. This means that it takes about an hour for half of the cocaine absorbed into the bloodstream to leave the body. However, heavy, long-term use may cause the drug to start to accumulate in body tissues, allowing certain tests to detect the drug in the system for an extended period of time.

For example, after a single use of cocaine, agents created by the metabolization of the drug can be detected in a person’s urine for 2-4 days. However, for chronic users, or if it follows a heavy binge, cocaine can be detected in urine for up to 14 days. The length of time that urine tests are effective also depends on the size of the dose and the purity of the substance. Extremely high doses can result in cocaine metabolites being detectable for up to 3 weeks.

Cocaine can also be detected in the blood and saliva for an average of 12-48 hours after the last use. Unlike many other intoxicants, cocaine will stay in a person’s sweat for an extended period of time, up to several weeks. It may also be detectable in a hair sample for years after an individual stops using the drug. However, urine toxicology screening remains the most commonly used method of testing for most medical facilities and in legal situations.

Anyone whose cocaine use is prevalent enough to be concerned about regularly submitting for cocaine testing should consider the possibility of an underlying cocaine use disorder.

No matter how it is used, cocaine is a particularly addictive drug, and its intense stimulant effects can cause long-term damage to the body and brain.

As such, those who struggle with cocaine addiction and subsequent compulsive cocaine use may benefit from substance abuse treatment as soon as possible.

Possible long-term health effects of cocaine include:

  • Vascular damage.
  • Cognitive impairment.
  • Reduction in brain gray matter.
  • Impairments in logic, critical thinking, and attention span.
  • Anxiety or depression.
  • Aggression.
  • Anhedonia (inability to feel pleasure).
  • Paranoia.
  • Psychosis.
  • Reduced ability to handle stress.
  • Headaches.
  • Heart problems.
  • Hypertension.
  • Tooth decay.
  • Damage to the heart, lungs, and/or liver.
All of these are serious issues that can be avoided with proper addiction treatment.
Last Updated on April 3, 2019
About the reviewer
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Amanda Lautieri is a Senior Content Editor at American Addiction Centers. She has more than 10 years of professional editing experience that includes working as a web editor for several major online publishers and editing medical content ranging from academic texts to online training and re-certification courses for emergency medical service responders.

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