Usually nicotine stays in the body 1 to 3 days after using a nicotine-contained product like cigarette and tobacco. If you need to undergo a test, better to don't use any of these product. Yes, drinking a lot of water, tea and milk will be of great help.
When testing the nicotine levels during blood test, the nicotine will be gone within 1-3 days after using tobacco. To help clear nicotine from your body, always remember to drink plenty of water, consume foods that contain Antioxidants and those that increase production of Bile, and lastly, perform physical exercise regularly to speed up your body’s metabolism.