Nicotine is a poison found in tobacco.

VOA: special.2010.03.09

A urine test that detects nicotine means no job is offered.

VOA: standard.2010.02.18

In their study, the researchers tested blood for cotinine,a chemical which is produced when nicotine is metabolized, so they got an objective measure of how much smoke the teenagers were exposed to.

VOA: standard.2010.03.04