How Long Does Nicotine Stay In The Bloodstream?
I have a blood test tomorrow at 4:00 PM and smoked a cigarette yesterday at about 7:30 PM. Will there be nicotine in my system? I only had one, and I smoke sparingly since I “quit” about 3 weeks ago.
One Response to “How Long Does Nicotine Stay In The Bloodstream?”
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September 5th, 2009 at 12:25 pm
Nicotine has a half life of about 2 hours. That means it will take 2 hours for half of it to go away. For example, let’s say you had 100 mg of nicotine in your blood. Two hours after the nicotine was put into your body, you will have 50 mg left. After another 2 hours, you’ll have 25 mg left. Another 2 hours, it will be down to 12.5 mg. Etc etc. So no, it shouldn’t be in the bloodstream tomorrow.