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How long does cocaine stays in the system?

How long does cocaine stays in the system?

The time that cocaine remains in the system can depend on the amount of the drug that people take. Cocaine can appear in urine tests up to 3 days after taking it, but for a heavy user, the test may be positive for as long as 2 weeks.

Cocaine can appear in a blood or saliva test for up to 2 days and show in a hair test for months or even years after the initial use.

Alcohol slows down the elimination process, so it may take longer than this for cocaine to leave the body when a person takes it alongside alcohol.

Following consumption, alcohol can show for up to 6 hours in a blood test, 24 hours in a urine or saliva test, and 90 days in a hair test.


All drug use carries risks. Taking certain precautions may help reduce the risk of the effects of cocaine and alcohol. The following harm reduction steps may help:

  • giving any vehicle keys to someone who is staying sober before taking any drugs
  • eating a meal before drinking
  • staying hydrated
  • staying with a trusted person who can monitor behavior
  • having condoms to hand to reduce the risk of unsafe sex
  • limiting the number of days on which cocaine and alcohol use occurs

If people want to stop taking cocaine and alcohol, it is best to undergo a detox with medical supervision. Doing this can help prevent potentially dangerous withdrawal symptoms.