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Doctor insights on: How Long Does Clonazepam Stay In Your Urine

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Dr. Shah Nawaz
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Dr. Crystal Twynham
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Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


Dr. Charles Nemeroff
Board Certified, Psychiatry
34 years in practice
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How long does it take for a small dose of clonazepam to leave your body and pass a urine test?

How long does it take for a small dose of clonazepam to leave your body and pass a urine test?

Depends: Depends on length of treatment. If taken daily it accumulates and takes time to be excreted. With the long half life, it takes a few weeks to be eliminated. ...Read more

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Dr. Crystal Twynham
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Dr. Alan Ali
Board Certified, Psychiatry
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I've been taking 2mg of clonazepam a day for roughly 2 weeks for bad panic attacks. How long will it be detectable in my urine?

I've been taking 2mg of clonazepam a day for roughly 2 weeks for bad panic attacks. How long will it be detectable in my urine?

Klonopin: Half life of Klonopin is long, around 2-3 days, so multiply that by 5 & u get about 2 weeks until Klonopin starts to clear out of your system. ...Read more

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Dr. Robert Killian
Board Certified, General Practice
22 years in practice
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How long does it take 1mg of clonazepam to exit your urine for a drug test?

How long does it take 1mg of clonazepam to exit your urine for a drug test?

Benzodiazepines: One to six weeks. It varies widely for a variety of reasons. If there has been more than a one time use i caution people that benzos stay positive for weeks not just one week. ...Read more

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Dr. Crystal Twynham
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Dr. Robert Killian
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Dr. Donald Jacobson
Board Certified, Psychiatry
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I took 1 mg of klonopin. How long will it be before i can pass a urine test ?

Klonopin 0-24 d: Often Klonopin is not tested for. A blood level often needs to be obtained because Clonazepam does not break down to Oxazepam which is used in the assay. Frustrating for us docs who want a quick test of patient compliance! but, there are some assays out there for it for urine detection so i put up to 24 days if your use was chronic. Blood levels peak in 1 to 8 hours after a single dose. Have life is nine to 50 hours. Five times half-life is the time that it should take for a single dose to leave the bloodstream. Brain levels do correspond to blood levels. ...Read more

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Dr. Bahman Omrani
Board Certified, Pain Management
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I took 6 klonopin around 12mg yesterday at 8pm, i was wondering how long it stays in the urine for a drug test. I weigh 143 and 5-11ft, i workout to?

I took 6 klonopin around 12mg yesterday at 8pm, i was wondering how long it stays in the urine for a drug test. I weigh 143 and 5-11ft, i  workout to?

Why: Not a bright idea to take 12 mg of Clonazepam (klonipin)...Seek a counselor, psychologist, psychiatrist, addiction specialist for help. It can take 3 days to clear but detection in urine also depends if its a qualitative versus a quantitative test and the sensitivity of the test. ...Read more

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Dr. Carol Stauffer-munekata
Board Certified, Family Medicine
30 years in practice
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How long will it taje 3 miligram klonopin to be out of my urine if hardly ever taken?

How long will it taje 3 miligram klonopin to be out of my urine if hardly ever taken?

Urine Testing?: Klonopin has a fairly long half life, 30-40 hours on the low end, and 50 hours on the high end. To be sure it is "out" of your body, wait 10-10.4 days (aprox 5 X 50hr half-lives) before risking a test. That being said, if the Klonopin was dispensed by your Doctor, you don't have to worry. If you took it for recreation, seek help - or you will relapse! ...Read more

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Dr. Vahe Yetimyan
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Dr. Dariush Saghafi
Board Certified, Neurology
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I have been on klonopin for 2.5 yrs 3mg a day. how long till it won't show in a urine test?

I have been on klonopin for 2.5 yrs 3mg a day. how long till it won't show in a urine test?

Why the worry?: I'm not sure I understand what the concern on a drug test is if you're taking a medically necessary medication prescribed by a doctor. An employer or potential employer cannot discriminate against someone on the basis of a positive urine test if the substance detected is from a medically necessary and prescribed drug. You simply need to show a physician's letter. ...Read more

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Dr. Donald Jacobson
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Clonazepam (Definition)

Klonopin (clonazepam) belongs to a class of medications called benzodiazepines. They are also referred to as sedative-hypnotics & anxiolytics. These medications are used for a variety of indications to include anxiety, insomnia, muscle spasm, seizure, & alcohol withdrawal. All benzodiazepines including Clonazepam are potentially habit forming. Alcohol should be ...Read more


Dr. Donald Jacobson
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Klonopin (Definition)

Klonopin is a long-acting benzodiazepine which is a kind of sleep-inducing drug (anti-anxiety drug, psychiatric drug) and a blood pressure drug which is a ...Read more


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