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Doctor insights on: How Long Does Xanax Stay In Your System For A Drug Test

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Dr. Alan Ali
937 doctors shared insights

Alprazolam (Definition)

Alprazolam is a short acting benzodiazepine, it does not last long in the system . So when used regularly with multiple doses to treat anxiety, it is associated with inter-dose withdrawal, tolerance and a resulting increase level of baseline anxiety. So in anxiety clinics, we use it only in cases of " flight , dentist or other infrequent anxieties, ...Read more


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Took 0.25 mg of Xanax (alprazolam) for the first time in 4 weeks. How long will it stay in my system for a drug test to be able to pick it up? Really worried. Took Monday night, test is Thursday at noon.

Possibly: Xanax has a half-life of 6-26 hrs. Other factors are your body's metabolism rate, fluid intake and other factors. Urine detection/positivity for alprazolam (Xanax) can range from 1-6 weeks. However, with just one dose, an estimate of 6 days is a likely possibility for positive detection in urine. ...Read more

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Took a half of a Xanax (alprazolam) bar for the first time... And I have a urine drug test coming up how long will it take to be out of my system I'm very worried?

Depends.: The half life of 0.5 Xanax, (alprazolam) immediate release is 11.2 hours. The full \range is 6.3 to 26.9 hours. So , thee answer depends on when you have your urine drug test. ...Read more

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Took half a pill of Xanax (alprazolam) (1mg)for the first time ever. How long will it stay in my system to pass a pee drug test? Please help

Xanax (alprazolam): has a half life of 12 hours. So 75% is gone in 1 day. Whether a drug test detects it depends on how sensitive the drug test is. As a rule of thumb it take 5.5 times the half life to completely eliminate a drug so 5.5 times 12 hours is about 3 days. To be safe give it a week. ...Read more

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How can I get xanax (alprazolam) put of my system for a urine drug test? What can I do to help?

Passage of time: It depends on the sensitivity of the screening test. Urine can show positive for about a week after taking Xanax (alprazolam). There are other factors such as your overall health, liver condition and presence of other drugs competing for metabolism. Time is your best bet. ...Read more

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How long will xanax (alprazolam) be detectable in a drug test.1-2mgs. Have a possible drug test in 8 days. Can they detect even a small amount.

Yes: Amounts as little as nanogram levels (0.000001 mg) are detectable in urine. Depending on the activity level of metabolic enzymes in your liver (some people are "fast metabolizers" based on their genetics and enzymes can be blocked or enhanced by other drugs and foods) the half-life is around 11hrs. So it can take days to weeks to clear. Xanax (alprazolam) can be dangerous and should only be taken by script. ...Read more

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How long can Xanax (alprazolam) be detected in saliva drug test?

Benzos: This is the most widely disputed drug class for testing. It really does depend on how much and for how long one has been taking it and if there was recent past heavy use. It has been easily found in these tests for up to six weeks and even longer with some addicts. The standard online data says one to six weeks. ...Read more

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Can you tell me how to pass a drug test after taking xanax (alprazolam)?

No: If you weren't prescribed and/or wasn't supposed to be using this drug and you did then the consequences are your problem.No ethical or responsible physician is going to help somebody cheat on testing even if they don't believe that testing is really a positive good in the world-and for the most part I don't. If you have a drug problem, get help for it; if not, take responsibility for yourself. ...Read more

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If i took 1 mg Xanax (alprazolam) on thues at 3am and never have taken one before will i pass a drug test on friday at 3pm?

Depends...: Depends on how long the xanax (alprazolam) stays in your system, which can vary from person to person. The half-life 6.3 to 26.9 hours. It can take 5.5 half lives for a drug to be eliminated from your system entirely, so that means that xanax (alprazolam) might be detectable as long as 147.95 hours which translates to 6 days. So if Thues = Tuesday and your test is on that Friday it "could" still be detected. ...Read more

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Female, 245 lbs, took 0.25 mg Xanax (alprazolam) 8 days ago. Have to take pre-employment drug test. Am I ok? Will it show up?

Female, 245 lbs, took 0.25 mg Xanax (alprazolam) 8 days ago. Have to take pre-employment drug test. Am I ok? Will it show up?

Probably not: if in fact you only took it once - it is short-acting and its metabolites are essentially gone in 3-5 days. Your weight doesn't really factor into it. However, if you are taking it by prescription, it should not matter unless you are applying for a safety-sensitive position (driver, police, fire etc.). If you are NOT prescribed it, you should NOT be taking it. ...Read more

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If I took .5 mg xanax (alprazolam) the day before my pre employment drug test and I hardly ever take medicines of any kind will it show up 14 hours after taken?

If I took .5 mg xanax (alprazolam) the day before my pre employment drug test and I hardly ever take medicines of any kind will it show up 14 hours after taken?

It may: Pre-employment drug screen is usually done on urine and benzodiazepines may be detected for up to a week. However, your employer may not require testing for this drug. If you have prescription for the medication, you should advise your employer of that. ...Read more

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If i took 0.5mg of Xanax (alprazolam) 24hrs before a pre-employment drug test will it show up as positive I am a male 49 years old 6ft2in tall 210lbs and have not used Xanax (alprazolam) before

It may: Depending on what test they use. Xanax (alprazolam) and Klonopin are not metabolized into the usual molecule that drug screening kits are looking for (at least not in large amounts) - oxazepam. There are kits that look for it. If you have a prescription for xanax, (alprazolam) that is an iron clad defense unless it is a safety=sensitive job. If it was not prescribed, you are misusing (if not abusing) the drug. ...Read more

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I took about 4 10 mg valiums and 1 2mg Xanax (alprazolam) bar together for 4 days, same dose of meds each day.I have a drug test in 16 days.Will i pass or fail?

I took about 4 10 mg valiums and 1 2mg Xanax (alprazolam) bar together for 4 days, same dose of meds each day.I have a drug test in 16 days.Will i pass or fail?

Pass: If you are not a chronic user and this was a one time thing, most likely you will pass. If you are taking the valium daily, it can stay in your system for up to 30 days. It is dangerous to take these two drugs together if this is not a prescription and under close supervision of a doctor. They work in the same way and can exacerbate the sedative effects. Please enter treatment if addiction. ...Read more

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Can someone give me info on passing a urine drug test if i take Xanax (alprazolam) to sleep?

Only take from doc: If you have a prescription issued to you for xanax (alprazolam) then it should be no issue. Do nottake other peoples medications. ...Read more

Dr. Alan Wartenberg
574 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


Xanax (Definition)

Alprazolam is a short-acting benzodiazepine which is a kind of sleep-inducing drug ...Read more