title: The epidemic investigation of serum 25-hydroxy vitamin D levels in the adults in Qujing area of Yunnan province in China.
abstract: OBJECTIVE
  To investigate the levels of serum 25-hydroxy vitamin D(25-OHD) and its related influence factors in the adults in Qujing area of Yunnan Province in China.
  
  
  METHODS
  25-OHD levels in the sera were detected with a 25-hydroxy vitamin D kit and read with LIAISON XL chemiluminescence analyzer. Data was statistically analyzed with software SPSS17.0.
  
  
  RESULTS
  The serum 25-OHD levels of the subjects were 12.08 ± 5.92 ng/ml. Although the sera levels of 25-OHD were significantly higher in urban residents, men and young subjects than in rural residents, women, and old subjects, the 25-OHD levels were significantly lower compared to international standard values in almost all populations in Qujing area.
  
  
  CONCLUSIONS
  Qujing is plateau area with affluent sunlight, however, serum 25-OHD levels of majority populations are low. The serum 25-OHD levels are affected by many factors. In order to avoid excessive diagnosis and treatment, the adjusted local standard values of serum 25-OHD are needed.
authors.affiliation: Division of Rheumatology and Endocrinology, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China.
authors.forename: Weiwen
authors.initials: W
authors.lastname: Chen
authors.affiliation: Division of Rheumatology and Endocrinology, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China.
authors.forename: Xiaode
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Division of Rheumatology and Endocrinology, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China.
authors.forename: Hanmin
authors.initials: H
authors.lastname: Wang
authors.affiliation: Division of Rheumatology and Endocrinology, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Division of Rheumatology and Endocrinology, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China.
authors.forename: Yingbo
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Workstation for Academicians and Experts of Yunnan Province, Qujing First Hospital at Kunming Medical University Qujing, 202150, Yunnan Province, P.R. China ; Division of Rheumatology, Penn State Milton S. Hershey Medical Center Hershey, PA 1703; Clinical Immunology Section.
authors.forename: Songguo
authors.initials: S
authors.lastname: Zheng
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001774:Blood Chemical Analysis / Q000592:standards*; D002681:China; D005260:Female; D006801:Humans; D008163:Luminescent Measurements; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012016:Reference Values; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000453:epidemiology*; D055815:Young Adult
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: Adult; epidemic; serum 25-hydroxy vitamin D