False Positive Testing
A compound called thiocyanate, which is found in some medications and foods including broccoli, garlic, radishes, almonds, and cabbage, can result in a false positive blood test result. Vegetarians may have elevated levels of this substance in their blood due to increased consumption of thiocyanate-containing foods.
Exposure to second-hand smoke is usually not enough to trigger a false-positive result, but being exposed to frequent or very high levels of second-hand smoke may cause someone to test positive for nicotine use. Such results are likely very rare, however.
How to Get Nicotine Out of Your System
The first step in getting nicotine out of your system is to completely stop using all products that contain it. The longer you keep using tobacco products, the longer the substance can be detected in your body.
Once you have stopped using nicotine, there are some steps you can take that may speed up how quickly the drug is excreted from your system.
- Stay hydrated. Drinking plenty of water will help remove nicotine and its metabolites from your body through urine.
- Eat nutritious foods. Sticking to a healthful diet that includes plenty of antioxidant-containing foods may speed up how quickly nicotine is removed from your system.
- Exercise. Regular physical activity can increase your metabolism and the rate at which the drug is processed and cleared from your body.
You may see products and herbal supplements marketed to speed up the nicotine elimination process. However, none of these have been verified or approved by the Food and Drug Administration (FDA).