Nicotine is not tested in drug tests.
The purpose of drug testing is to evaluate the safety and effectiveness of a drug. Nicotine is a neurostimulant, the main ingredient in tobacco, that affects many body systems, including the cardiovascular, respiratory and central nervous systems.
In drug clinical trials, subjects' smoking may have a negative impact on the test results, such as affecting drug metabolism, drug response or drug clearance speed, etc., resulting in deviation or inaccuracy of test results.
Therefore, drug clinical trials usually require smoke and non-smoke tests to avoid the influence of smoking on test results.