So, when you smoke, nicotine enters your bloodstream and starts doing its thing. But your body is all, "Hey, I need to get rid of this stuff!" And that's where cotinine comes in - it's like the nicotine's BFF that hangs around for a bit longer. The question is, how long does it stick around?
Well, it turns out that cotinine has a half-life of around 15-20 hours, which means it takes about that long for its levels to decrease by half. But, here's the thing - it can still be detected in your bloodstream for up to 10 days after you've last smoked. That's like, a whole week and a half - pretty wild, right?
And, just to put that into perspective, imagine your bloodstream is like a highway system with different cars (or, in this case, chemicals) moving through it. Cotinine is like a car that gets on the highway and drives around for a bit, but eventually, it gets off at an exit and is gone. But, the thing is, it can still be detected, even after it's "exited" the highway - mind blown, right?
