A diverse array of testing methods are available nowadays, some are laboratory based while others are used for home testing purposes. Most of these tests provide a quick, accurate and on-the-spot determination of a person’s level of exposure to tobacco products either actively or passively i.e. by second hand smoke & allow detection, verification and monitoring of tobacco use status over a period of time. Frequent users of these tests include parents of young children, workers in a smoky workplace, smokers trying to quit, coaches, insurance companies, smoking cessation counselors and other persons concerned about the harmful effects of second hand smoke.