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Reference Interval for Osteocalcin in Chinese Han Ethnic Males from the Fangchenggang Area Male Health and Examination Survey by Xue Qin, Huiling Wu, Zengnan Mo, Zhiping Chen, Shixing Luo, Yong Gao, Aihua Tan, Xiaobo Yang, Haiying Zhang, Tao Peng, Yanling Hu, Shan Huang, Haiwei Li, Yan Deng, Qiliu Peng, Qinghua Lu, Shan Li, Jinmin Zhao

Background: The aim of this study was to set a reference interval (RI) for osteocalcin (OC) in a healthy Han male population from the Fangchenggang Area Male Health and Examination Survey (FAMHES) project and study the effects of age, BMI, smoking, and alcohol consumption.
Methods: We used data from 2018 Han ethnic males who participated in FAMHES project from September 2009 to December 2009. Serum OC values were measured by electrochemiluminescence immunoassay on COBAS 6000 system E601 (Elecsys module) immunoassay analyzers.
Results: OC data does not have a normal distribution or Gaussian pattern (Z = 3.791, p < 0.001). After log-transformation, data took on a normal, Gaussian distribution (Z = 0.968, p = 0.306). The RI of serum OC was 12.49 - 43.94 ng/mL. No difference in OC concentration was noted either between non-smoker or smoker groups (p = 0.629) or non-drinker and drinker groups (p = 0.748). OC levels varied with age (r = -0.371, p < 0.001) and BMI (r = -0.331, p < 0.001), and the age-dependent and BMI-dependent RIs were calculated.
Conclusions: The RIs for serum OC exhibit slight differences compared to previously reported reference ranges. Age-dependent and BMI-dependent RIs for serum OC should be implemented in clinical laboratories.

DOI: 10.7754/Clin.Lab.2013.130331