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Doctor insights on: Urine Cotinine

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Can nicotine free cigarettes be detected in a urine cotinine test? Any help appreciated!

Can nicotine free cigarettes be detected in a urine cotinine test? Any help appreciated!

No: If you are not using nicotine in the heating chamber, and you haven't smoked tobacco in the last week, your test should be negative. I would point out that the safety of the propellant in these e-cigs (propylene glycol), as well as flavorings and additives, have never been subjected to study, and we simply do not know their long-term safety/dangers.They are likely safer than smoking tobacco though ...Read more

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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I have been smoking 8-10 cigarettes for last 10 years.I have a urine cotinine test in 20 days. Will I test Negative if i quit smoking 10 days before the test?

I have been smoking 8-10 cigarettes for last 10 years.I have a urine cotinine test in 20 days. Will I test Negative if i quit smoking 10 days before the test?

Cotinine: Levels of cotinine detected in urine vary due to a variety of factors including; the type of tobacco used, filtered vs. non-filtered cigarette, how heavily the individual inhaled the smoke, the length of time an individual chewed, the number of cigarettes smoked per day, and the concentration of the urine. These variables make it difficult to determine exactly how much an individual uses tobacco. ...Read more

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If I am taking a cotinine urine test and smoked approximately a week before the test, and for about 6 years, will I pass fail?

If I am taking a cotinine urine test and smoked approximately a week before the test, and for about 6 years, will I pass fail?

Cotinine: Is a metabolite of nicotine and can be present in the blood for up to 2 weeks before dropping. It can also distinguish between active users and those who have been passively exposed ...Read more

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Can marijuana show up in cotinine urine tests?

Can marijuana show up in cotinine urine tests?

No: It only detects a breakdown product of nicotine. Its purpose is to detect cigarette use and use of other nicotine products. ...Read more

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I quit using smokeless tobacco over 8 weeks ago. I have a urine test for cotinine in the upcoming weeks for a new job opportunity. Will i pass?

I quit using smokeless tobacco over 8 weeks ago. I have a urine test for cotinine in the upcoming weeks for a new job opportunity. Will i pass?

You should: Tell them up front, if it will not disqualify you, that you wanted this job so much you discontinued your smokeless tobacco 8 weeks ago. Cotinine is usually out of the system after a week or less. Congratulations on smoking cessation. ...Read more

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My last smoke was jan 25 and I have my nicoten test for work. Tomorrow feb 7th should my urine be cleen of cotinine to pass ?

My  last  smoke was jan 25 and I have my nicoten test for work. Tomorrow feb 7th should my urine be cleen of cotinine to pass ?

That depends on the: Amount & duration you smoked, how deeply you inhaled, whether the cigarettes were mentholated, your genetic set-up for the enzymes in your liver that metabolize nicotine, & whether you're a passive smoker at home or work. You may still have low-moderate amounts of cotinine in your urine. ...Read more

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How long does cotinine stay in urine?

How long does cotinine stay in urine?

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

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