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Purpose:This observational study investigated the association between serum osteocalcin level and blood pressure in a Chinese population. Materials and methods:A total of 2241 subjects (909 men and 1,332 women; age, 24–78 years) from Shanghai communities were recruited. Subjects were divided into non-hypertensive and hypertensive groups according to diagnosis of hypertension based on the 1999 World Health Organization-International Society of Hypertension Guidelines. Serum osteocalcin levels were measured using an electrochemiluminescence immunoassay. Results:Men in the hypertensive group showed lower serum osteocalcin level compared with those in the non-hypertensive group, [16.37 (13.34–20.11) ng/mL versus 17.01 (14.23–20.79) ng/mL,p = .039]. No difference in serum osteocalcin level was found between the two groups of women (p = .675). An inverse association was observed between serum osteocalcin level and systolic blood pressure (SBP) in men (p = .004), but serum osteocalcin level was not associated with diastolic blood pressure (DBP) in men (p = .472). No associations were detected between serum osteocalcin level and SBP or DBP in women (SBP:p = .108; DBP:p = .575). A multiple stepwise regression analysis showed an inverse association between serum osteocalcin level and SBP in men after adjusting for age, smoking status, family history of hypertension, and lipid and C-reactive protein levels (standardized β = –0.074,p = .023), but the association disappeared after adjustment for body mass index, waist circumference, blood glucose, and homeostasis model assessment of insulin resistance (p = .327). Conclusions:Serum osteocalcin level was not independently associated with blood pressure in a Chinese population. [ABSTRACT FROM PUBLISHER]