Whether chewing tobacco will show up in a urine test and the levels to which it will be present will vary from person to person and will depend on the situation.
There does not appear to be a universally agreed answer to this question, but it has been stated by various sources that detectable quantities of cotinine can still be present in the urine between 2 and 4 days after tobacco usage. This can apply as much to chewing tobacco as to tobacco that has been smoked by a person.
Trace amounts of nicotine and cotinine can stay in a person's system for up to 20 days, but in urine tests there is unlikely to be any unusual levels present in the body after about 2 or 3 days provided that you are only an occasional user of the substance.
If you are a more regular user of tobacco then it is possible that your levels may be slightly more elevated even if you have not used tobacco in the previous few days before the test takes place.
Nicotine will stay in the blood and urine for 48 hours at the very most, but cotinine can leave traces in your system for up to 7 days after tobacco usage.
There are suggested steps that you can take to try to flush signs of tobacco use from your system more quickly, although the extent to which any of these actually work is uncertain and should not be relied upon. Possible methods to try include:
• Drinking lots of citrus drinks which are high in vitamin C, which speeds up your metabolism
• Drinking lots of coffee and water
• Consuming antioxidants