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

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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


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How long does klonopin (clonazepam) stay in your urine? I only took one pill 6 and a half days ago.

How long does klonopin (clonazepam) stay in your urine? I only took one pill 6 and a half days ago.

5-8 days: The elimination half life of clonazepam is dose dependent and ranges from 24 - 40 hours. A single 2 mg pill will have a longer total elimination time than half milligram, but the amounts in the last half-life will be very small and may not register in screening urine testing. ...Read more

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I took 5 1mg klonopins (clonazepam) how long will it take to leave my urine?

I took 5 1mg klonopins (clonazepam) how long will it take to leave my urine?

Klonopin (clonazepam): Klonopin (clonazepam) has a half life of 20 -50 hours so it may take 4-7 days to clear your urine. If you took 5 1mg Klonopin (clonazepam) at one time you may have a problem with medication misuse and may need additional help ...Read more

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

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

Klonopin (clonazepam): Has a longer elimination half life than most benzodiazepines 19-60 hours. It is metabolized by the liver and excreted through the kidneys. Grapefruit juice made from the rind can delay the elimination. 3 mg is a big dose. 0.5 mg of Klonopin (clonazepam) is similar to 10 mg Valium. So you may have undetectable levels in 6 to 12 days depending on your metabolism. ...Read more

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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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I took 1 mg of klonopin (clonazepam). How long will it be before I can pass a urine test?

Klonopin (clonazepam) 0-24 d: Often Klonopin (clonazepam) 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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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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I have been on klonopin (clonazepam) 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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I took 6 klonopin (clonazepam) 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 (clonazepam) 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

Dr. Alan Ali Dr. Ali
2 doctors agreed:
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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?

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

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How long will klonopin (clonazepam) be detectable on employee urine drug screen?

How long will klonopin (clonazepam) be detectable on employee urine drug screen?

Klonopin (clonazepam): Depending on dose, how often daily and how long you are on it, usually up to 72 hours. ...Read more

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If I was to take 2mg klonopin (clonazepam) tonight when will it be out of my urine?

If I was to take 2mg klonopin (clonazepam) tonight when will it be out of my urine?

Tsk-tsk-tsk: You know, you have to have at least some smarts to be a doctor. Most doctors are savvy enough to spot when someone is trying to inveigle them into helping them beat a drug test. What makes it even more obvious is that you're naming a dose that's higher than most doctors would ever prescribe. ...Read more

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I took a. 5 mg Klonopin on the ninth and have a urine test the 29 will I be clean to pass?

I took a. 5 mg Klonopin on the ninth and have a urine test the 29 will I be clean to pass?

You should be clear: The elimination half-life range for adults is mysteriously wide spread - I've seen it given from 17 thru 60 hours - I'm not sure what would make the difference but yu are well beyond even the longest. Also, although it doesn't seem to matter, if you have a Rx, you would be covered and if you don't - please try to avoid using such stuff as a plaything or to self-treat disease. You should be fine! ...Read more

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Why is klonopin (clonazepam) not showing in my urine if I am taking it 3 times a day?

Why is klonopin (clonazepam) not showing in my urine if I am taking it 3 times a day?

Metabolism: If it is certain that you are taking Klonopin (clonazepam) and it is not showing in your tests, you may be rapidly metabolizing the medication. Talk to your doctor to investigate this option. ...Read more

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If I took a 1 mg klonopin (clonazepam) last night, will it show up in a urine test? Tomorrow?

If I took a 1 mg klonopin (clonazepam) last night, will it show up in a urine test? Tomorrow?

Yep: Klonopin's half-life tends to long, compared with other benzodiazepines, which I believe is 18+ hours. Regardless, benzos can be detected 24 hours after use. ...Read more

Dr. Donald Jacobson
839 Doctors shared insights

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
824 Doctors shared insights

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