There was a significant direct correlation between serum free-total PSA ratios of serum and saliva (P = .04) and between total PSA-protein ratios of serum and saliva (P = .02). Also, there were significant correlations between total and free PSA levels in saliva (P = .05) and between those in serum (P < .001). Significant inverse and direct correlations were detected between the body mass index and serum values of total PSA-protein (P = .04) and free-total PSA (P = .01), respectivel