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Doctor insights on: How Long Can Cocaine Be Detected In A Drug Test

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How long does cocaine stay in your urine and turn drug test positive?

How long does cocaine stay in your urine and turn drug test positive?

1-4 days: Most sources list the time for positive Cocaine in the urine from urine drug screen to be 1 to 4 days, with an average time of 3 days. Confirmatory testing for Cocaine rarely reveals a false positive screening. ...Read more

Dr. Alan Wartenberg
590 Doctors shared insights

Drug Testing (Definition)

It is the process of examining body fluids or tissue for evidence of chemicals taken or not taken. It does not diagnose addiction however this a ...Read more


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I tried cocaine for the first & last time. I did 3 lines of it. I wanted to know how long that would show up in a urine drug test?

I tried cocaine for the first & last time. I did 3 lines of it. I wanted to know how long that would show up in a urine drug test?

Cocaine's half-life: Is relatively short (0.5-1.0 hrs) so it's gone from your system w/i a day; its primary metabolite benzoylecgonine, however, has a longer half-life (5-8 hours) & can generally be detected for 24-80 hours after Cocaine use or exposure. Tests screen for both Cocaine & its metabolite. ...Read more

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How long does cocaine stay in the urine for? I had some saturday night midnight and then got called in today at work for a random drug test.

How long does cocaine stay in the urine for? I had some saturday night midnight and then got called in today at work for a random drug test.

The detection level: Varies from lab to lab. Cocaine has a fairly short half life. Another factor would be the dose you took. If they want to look for cocaine they could obtain an assay from your hair. ...Read more

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How long will cocaine show up ina urine drug test for not a regular consumer?

How long will cocaine show up ina urine drug test for not a regular consumer?

Cocaine testing: Cocaine should be out of your system in 2-3 days. There are many factors the will determine how long a test will be positive, including amount used, frequency of use, metabolism, etc. ...Read more

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How long will cocaine take to get out of my system if I did it last Friday? I'm detoxing w/vinegar water cranberry juice & I have a drug test this fri

How long will cocaine take to get out of my system if I did it last Friday? I'm detoxing w/vinegar water cranberry juice & I have a drug test this fri

Cocaine use: Cocaine has a very short half life of only several hours which means it is quickly out of your system. Because of this cocaine is highly addictive and I would recommend treatment if you are a regular user of this or other illegal drugs. Your drug test on the following should be negative if you do not use again. Good luck. ...Read more

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Swab drug test how long does it take for cocaine and morphine sulfate to get out your system?

8 days ; 8-12 days: Cocaine may be detected in urine and other body fluids through chromatography upto 8 days. Morphine sulfate may be detected upto 8-12 days. ...Read more

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Is 109 hours enough to clean for cocaine in a drug test?

Is 109 hours enough to clean for cocaine in a drug test?

Most likely...: Most likely not. Depending on how heavy use, and other personal factors, besides of course what methods of detection are used. The best way to achieve a clean tox screen is to get clean. Do not use drugs, get detox if needed (call na hotline or 1855 detox 00, or ask your dr). Good luck. ...Read more

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Did cocaine 17 days ago. Will I pass drug test tomorrow?

Did cocaine 17 days ago. Will I pass drug test tomorrow?

Unlikely: You are sort of borderline at 17 days, and drug test can potentially detect. Bigger issue is your use of a dangerous drug which can cause heart and brain damage. Recommend counseling and a drug rehab program to stop this self-destructive pathway. ...Read more

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Why did my drug test show positive for cocaine?

Few possibilities: There are 3 possible explanations: clerical error (you got the wrong test results), false positive (something legitimate fooled the test), and true positive (you really had Cocaine in your system). There are not many false positives for the Cocaine test, although liver or kidney disease, diabetes, and the antibiotic Amoxicillin reportedly can do it. ...Read more

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Could lidocaine show in your drug test as cocaine?

No: Lidocaine and Cocaine are different drugs, even though they share the "-caine" part in their names. Lidocaine does not cause a false positive for Cocaine on a drug test. ...Read more

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How could anesthesia come up as cocaine in a drug test and what types of anesthesia?

Nasal surgery: Ear, nose & throat surgeons (otolaryngologists) often use Cocaine to numb the nose before surgery. Examples: surgery for deviated septum or turbinate resection. Cocaine is used as a local anesthetic to numb the area and to constrict blood vessels in order to reduce bleeding. ...Read more

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I used cocaine 2 weeks ago. Will I test positive in a urine drug test?

cocaine: Cocaine can show up for upto 1 week and sometimes for unto 2 weeks. ...Read more

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I did cocaine weekend and monday and did a urine drug test friday at 4 pm, do you think it would be positive?

I did cocaine weekend and monday and did a urine drug test friday at 4 pm, do you think it would be positive?

Depends on test: Different urine drug screens have different levels of sensitivity. If it does not show up, consider this a wake up call that it is time to get treatment before you have medical or legal problems from drug use. ...Read more

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If I did about a quarter of a gram of cocaine on Sunday night will I pass a drug test on Friday afternoon? I have been drunking water everyday but no

Should: Cocaine and its metabolites are likely to be out of your system in 5 days. Do yourself a favor and never to drugs again.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex. ...Read more

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I did a drug test and was positive ffor cocaine but have never done any drugs I was sick n taking over-the-counter meds would this cause a falsereport?

I did a drug test and was positive ffor cocaine but have never done any drugs I was sick n taking over-the-counter meds would this cause a falsereport?

Yes, false positive: Yes, many over the counter (otc) medications can cause false positive results on drug tests. This is particularly true for many otc cold medications including inhalers. Up to 65 otc medications and 250 prescription drugs can cause false positive results on drug tests. ...Read more

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I heard that Ibuprofen shows up as cocaine on a drug test. Is that true??

I heard that Ibuprofen shows up as cocaine on a drug test. Is that true??

Nope: Drinking coca tea or chewing coca leaves can produce metabolites that could cause a false positive DOA screening test. Not ibuprofen. ...Read more

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Will stopping cocaine and alcohol for 18 day give me a clean urine drug test.

Will stopping cocaine and alcohol for 18 day give me a clean urine drug test.

Likely: Alcohol most likely yes, Cocaine tends to hang around in the system for a week easily, but could be longer depending on other factors. ...Read more

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Is there any way a urine drug test can test positive for benzoylecgonine and it not be cocaine?

Lab error: Sadly, these tests are not perfect. A good honest pathologist and a good lawyer may be what you need. ...Read more

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I am a female and I did one line of cocaine around 4pm and I could have a drug test in the morning do u think I will pass a urine test?

Unlikely: Your urine will have metabolite of cocaine. Unless the cut-off is set too high your will test positive.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex. ...Read more