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.
Nicotine may be detected long after its effects on the body have resolved. The physiologic effect of nicotine is gone in 14 - 48 hours. The breakdown product from nicotine (cotinine) may be detected in the urine for about seven days. Nicotine can also be extracted from hair for as long as several months.