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How to pass a nicotine urine test 
Taper your nicotine use for at least 2 weeks before the test. 
To pass the test, you need to get the nicotine out of your system. Because quitting cold turkey can be challenging, reduce your nicotine usage at least 2 weeks in advance.
The sooner you begin tapering, the less nicotine you'll need to worry about purging. For example, if you smoke a pack a day, gradually cut back by having 1 less cigarette every day.