More accurate tests, that work with blood samples instead of urine, were used during research performed at the Johns Hopkins University School of Medicine
State Tobacco products (including cigars, cigarettes, smokeless tobacco and smoking tobacco), alternative nicotine products (non-combustible product containing nicotine that is intended for human consumption, whether chewed, absorbed, dissolved, or ingested by any other means) and vapor products such as e-cigarettes (noncombustible product containing nicotine or other substances that employs a heating element, power source, electronic circuit, or other electronic, chemical or mechanical means, regardless of shape or size, that can be used to produce vapor from nicotine in a solution or other form)
Chatham County Parks and Recreation and Triangle Rails-to-Trails Conservancy manage the site
I actually wear it more than DHI because DHI is too strong and less pleasing to others