Cortana may refer to: 1  Cortana (software), Microsoft personal assistant software. 2  Cortana (Halo), a fictional artificial intelligence character. 3  Cortana (gastropod), a gastropod genus.  Cortana, or Curtana, a ceremonial sword used in the coronation of British 1  monarchs. Cortana Mall, Baton Rouge, Louisiana,  USA.
The length of time that nicotine stays in the body and cotinine can be a reliable indicator of nicotine use depends on the amount of tobacco smoked, the number of years smoking tobacco, and the type of nicotine test performed. It can be as short as 2 days, or as long as 3 months.
A cotinine test can detect nicotine up to 4 days after use in the human system. If you have had a casual cigarette and want to ensure that a nicotine test does not give you away resulting in a high premium, you should consider checking your nicotine levels at home before you agree for a medical test. A home nicotine test can ensure that you are completely clean and ready for the test. Most home nicotine testing requires a small sample of urine and takes less than 5 minutes for results to appear. The home test is based on the standard cut off level of 200 ng/ml.