How Long Does Nicotine Stay In The Blood?

Nicotine stays in the blood for several hours, up to 48 hours to be precise. After this it cannot be detected in the blood or urine. However, the metabolite of nicotine which is known as Cotinine leaves its traces in blood as well as in urine for up to 7 days. About 85 to 90 per cent of the nicotine which is present in your blood is metabolised by the liver and is thrown out of your system by the kidney. But due to the higher concentration, many a times, it still persists in the blood stream. Nicotine is a very highly addictive chemical that is the main component of cigarettes. Your body, especially your heart and lungs, will usually begin to heal at 12 hours after you've had your last cigarette/ stopped smoking.

The answer to this will depend on how much you smoke per day, and how long you’ve smoked.  In a small percentage of people, how your body metabolizes nicotine (or more accurately, how it doesn’t metabolize nicotine) will also come into play.

Nicotine itself is generally out of the blood within 48 hours.  However, your body metabolizes nicotine into a substance known as cotinine.  Drug tests look for both nicotine and cotinine, because the latter drug can stay in your blood for four to five days after your last smoke.  

Some people have a genetic anomaly that causes their liver to metabolize the cotinine much more slowly than normal.  For these people, it might take an additional day or two of non-smoking to clear enough cotinine from their system that they could pass a drug test.

Keep in mind that, while few companies drug test via hair samples, it could be done and that both nicotine and cotinine remain in your hair for weeks or even months.

An alkaloid found in the night shade plant family is known as nicotine. Nicotine spends around 2-3 hours in a human body. As the substance enters the body it quickly runs and distributes itself in the blood stream and blood-brain barrier. It takes around 7-8 seconds for nicotine reach the blood brain barrier. Nicotine is used in tobaccos; the intake of nicotine in the body by smoking depends on the quality of tobacco.

Nearly half a million people in the United Kingdom die by the use of tobacco. Intake of nicotine can harm every functional organ in the body. Nicotine is an addictive drug, once started it is very hard to get rid of the habit. Excessive use of tobacco can also result in cancer and ultimately to death.

The name nicotine is taken from 'Nicotiana tabacum'; it is a plant that produces Nicotine.

Nicotine can stay in your system up to a week.

2-4 days on average but in heavy smokers can be detectable in blood up to 3 weeks.

Ow o pass nicotine blood test

My husband has been saying that he's not smoking..but the other day i found 2 packs of empty packs and he still denies it was his. What can i do to catch him?

Kiss him and smell his cloth, because cigarette has got the power to stick every where .

For 72 hours

I agree with Leanback. You will NEVER make a smoke quit. My dad died of lung cancer 7 years ago when I was 14 and every boyfriend I have had has tried to MAKE me quit and I REFUSE, ABSOLUTELY REFUSE to be told what to do. So if you want to "catch him" its not going to work. Rather sit down with like an adult and tell him that if he wants to smoke then that is fine but you want to be honest with each other. Explain how you love him and you dont want to lose him any earlier than you have to and fears that you have. I am now trying to quit but its not because someone is making me it is because I want to be alive to see my child walk graduate from high school and college which is something that my dad will never see.

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