slide 2 of 12. Skin The skin is the largest organ in the human body. Its main job is to maintain the body's temperature, which means that sweat is created to cool the body, and goosebumps or raised hair occur to trap heat in the body. Along with sweat glands, the skin contains oil glands.
...However, if I am wrong about that, the answer is that acetaminophen (and its metabolites) are identifiable for up to 48 hours after you took the pill. Less if you took tiny doses, but up to standard clinical doses (<8g), it's 48ish hours.
I takes approximately 4 hours for tylenol to leave your body.... 0. 0. I takes approximately 4 hours for Tylenol to leave your body. However, if you have the time release 12 hour medication, it won`t leave your body for 12 hours. This type of pill you only take 1 every 12 hours.. It takes acetaminophen which is Tylenol, 4 hours to leave your body so long as it is not a 12 hour time release pill. In that case, it would take 12 hours.