Exhaled carbon monoxide tests may be negative if you are not smoking any conventional cigarettes since e-cigarettes don't burn, but urine/blood/saliva cotinine tests will trigger positive results. Cotinine is a breakdown product of nicotine.
Exhaled carbon monoxide tests may be negative if you are not smoking any conventional cigarettes since e-cigarettes don't burn, but urine/blood/saliva cotinine tests will trigger positive results. Cotinine is a breakdown product of nicotine.