An Irrational Number is a real number that cannot be written as a simple fraction.
1 The nicotine will totally be gone within 1-3 days after your last using tobacco.  In urine: The urine test normally can detect nicotine level within 3-4 days after the last time you use tobacco. However, if you often smoke or you are passive smokers, nicotine can stay for a period of 15 to 20 days in urine.
Best Answer: How long does The Nicotine Stay in your System or Blood stream? Officially it is 48 hours but I say 72-96 hours. That's the thing with nicotine it acts fast but also leaves the body quickly.