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Doctor insights on: How Long Does Cotinine Stay In Blood

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How long does cotinine stay in blood for?

How long does cotinine stay in blood for?

Cotinine: It is a metabolite of nicotine. It has half-life of @20 hours, & is detectable for up to 1 week after use of tobacco. ...Read more

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How long could cotinine stay in blood and urine after being around second hand smoke?

About a week: Cotinine has an in vivo half-life of approximately 20 hours, and is typically detectable for several days (up to one week) after the use of tobacco.
Cotinine levels <10 ng/ml -non smoker
10 ng/ml to 100 ng/ml are associated with light smoking or moderate passive exposure and levels above 300 ng/ml are seen in heavy smokers. ...Read more

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How long could the presence of cotinine be detected in the blood, after smoking 10 cigarettes in 1 day?

How long could the presence of cotinine be detected in the blood, after smoking 10 cigarettes in 1 day?

Urine, not blood: Is what is usually measured, because it persists in urine far longer than in blood, and blood is harder to get (and the technology of detecting it is somewhat trickier, I understand). It persists in urine for about 2-3 days at most, and in lighter smokers or occasional smokers may be gone even within 24 hours. ...Read more

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What do you advise if I smoke a pack a day how long before cotinine is out of my blood so I can pass a blood test?

What do you advise if I smoke a pack a day how long before cotinine is out of my blood so I can pass a blood test?

3-4 days: At most. Nicotine is a short-acting drug, and is metabolized into cotinine, which can be detected in blood for 1-2 days, in urine 3-4 days at most. More important than passing the "smoking" drug test is QUITTING TOBACCO. I encourage you to strongly consider getting into a formal tobacco cessation program. ...Read more

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I had a blood draw Fri and they messed up My sample for Cotinine. I smoked one cig the week before & 3 this sat. How long before I can retest?

I had a blood draw Fri and they messed up My sample for Cotinine. I smoked one cig the week before & 3 this sat. How long before I can retest?

On the safe side...: On the safe side 10 days for urine and blood tests. Staying well-hydrated, exercising & avoiding drinking alcohol may decrease detection time. To be really safe, however, take this opportunity to QUIT SMOKING altogether. You've already shown that you can do so for a week, so why not for the rest of your long healthy life???? ...Read more

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How long does it take for cotinine to leave blood and urine after you quit smoking?

How long does it take for cotinine to leave blood and urine after you quit smoking?

Cotinine test: This will depend on which test they are using so ask the tester. Do no chew or dip as this will show up as well. ...Read more

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How long do I need to stop smoking before a cotinine blood test?

Depends....: At least more than 2wks..........but there is genetic and individual variations. ...Read more

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How long does cotinine remain detectable in your hair, urine, blood and saliva?

1 week: Different people metabolize nicotine at different rates. However, cotinine has a half-life of approximately 18-27 hours. It takes approximately 6 half-lives for a drug to be eliminated from your system. 27*6/24 = 6.75 days. The cotinine will stay in your system for 1 week. ...Read more

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How long to rid blood of continine after smoking?

How long to rid blood of continine after smoking?

Maybe a week...: It likely depends on how high the cotinine level got (how much smoking was being done). After stopping smoking (stopping nicotine), the cotinine level will drop every day. Some websites say the level is detectable up to a week from the day smoking stopped. ...Read more

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How long does continine stay in your bloodstream. The 11th was my 1st day w/o smoking. I have a continine blood test tmrw. I used a 3-day detox progra?

How long does continine stay in your bloodstream. The 11th was my 1st day w/o smoking. I have a continine blood test tmrw. I used a 3-day detox progra?

The real question...: Take this like a man. You knew there was a test coming up, but you have been unable to stop smoking. It's extremely difficult, and your best move if you test positive -- or negative -- is to tell the truth and get the help you need. Failing the test is nothing compared to dying of smoking. Let's just get you off tobacco and no worry about anything else. "Detox" is worthless -- sucker bait. ...Read more

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They say cotinine is cleared from blood within 2 weeks - why do they say it can bedetwcted after 6 months?

They say cotinine is cleared from blood within 2 weeks - why do they say it can bedetwcted after 6 months?

Who says?: A couple of weeks is sufficient to clear cotinine.
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, if you have sex.
Get HPV vaccine ...Read more

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I have been smoke free for 28 days. Have a blood test due for cotinine in 2 days. Lets say it is very sensitive - would i test positive?

I have been smoke free for 28 days. Have a blood test due for cotinine in 2 days. Lets say it is very sensitive - would i test positive?

Unlikely: Cotinine should be out of your system long before now.
Now that you have stopped using tobacco, stay away from it.
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, if you have sex.
Get HPV vaccine ...Read more

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For the occasional smoker will cotinine show up in blood test?

For the occasional smoker will cotinine show up in blood test?

Depends: It depends on how soon after smoking the test is done and there are many other variables. Consult this site for more info.
http://www.ncbi.nlm.nih.gov/pmc/articles/pmc2953858/. ...Read more

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I am not a smoker but had a few cigs while drinking a few weeks ago. How likely am i to test positive for cotinine on a blood test?

I am not a smoker but had a few cigs while drinking a few weeks ago. How likely am i to test positive for cotinine on a blood test?

Not likley: A week for an occasional user is enough to clear the nicotine from your body, provided you have not been exposed to second hand smoke. Combining alcohol and tobacco is a very bad idea and their toxic effects are synergistic. Avoid tobacco, always, and have no more than one drink a day. ...Read more

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Can a normal blood test detect nicotine and cotinine? I do vape every day and I take in 6mg of nicotine.

Normal blood test: No you have to ask for a nicotine or specific test. But not certain what you mean by a "normal" blood test. ...Read more

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If you are a non-smoker but smoked 3 menthol cigarettes are you able to pass a cotinine blood test?

Depends: If you have the test day after smoking you may not pass, however, a week later you should pass as long you have no other exposure to tobacco, including second hand smoke. ...Read more