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.
to make sure you get the entire dose add a little more water to the same glass swirl gently and drink right away stop taking acetaminophen and call your doctor if you still have a fever after 3 days of use you still have pain after 7 days of use or 5 days if treating a childyou have a skin rash ongoing headache or any redness or swelling ortop taking acetaminophen and call your doctor if you still have a fever after 3 days of use you still have pain after 7 days of use or 5 days if treating a child you have a skin rash ongoing headache or any redness or swelling or