[The effect of smoking and passive smoking on thiocyanate content in saliva].

The saliva thiocyanate contents were determined among smokers and passive smokers. The saliva thiocyanate contents of passive smokers in smoking environment and non-smoking environment were compared. The results showed that the saliva thiocyanate in smoking environment was higher than that in non-smoking environment (P<0.01). The results indicate that the saliva thiocyanate detecting is a direct and sensitive index for evaluating the hazard of passive smoking.