title: Relationship between hemoglobin A1c and blood glucose throughout the day in well-glycemic-controlled medical nutrition therapy alone type 2 diabetic patients.
abstract: OBJECTIVE
  To investigate the relationship between glycosylated hemoglobin A1c (HbA1c) and blood glucose levels of eight different points throughout the day in well-glycemic-controlled medical nutrition therapy (MNT) alone type 2 diabetic patients.
  
  
  METHODS
  Data were collected as' capillary blood glucose value of eight different sample points among sixteen observing days in thirty MNT alone type 2 diabetic patients. The correlation between HbA1c and capillary blood glucose value was evaluated by Pearson's correlation method.
  
  
  RESULTS
  The r-values between HbA1c and capillary blood glucose of 3:00, 6:00, and bedtime (22:00-23:00) were 0.81, 0.79, and 0.78, respectively (P < 0.001). The best correlation was found between the mean value of 8-point blood glucose value throughout the day and HbA1c (r = 0.84, P < 0.001).
  
  
  CONCLUSIONS
  Fasting blood glucose and postabsorptive blood glucose have better correlations with HbA1c compared with other points in this group of well-glycemic-controlled MNT alone type 2 diabetic patients.
authors.affiliation: Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730. liwenhui68@vip.sina.com
authors.forename: Wen-Hui
authors.initials: WH
authors.lastname: Li
authors.forename: Xin-Hua
authors.initials: XH
authors.lastname: Xiao
authors.forename: Qi
authors.initials: Q
authors.lastname: Sun
authors.forename: Guo-Hua
authors.initials: GH
authors.lastname: Yang
authors.forename: Heng
authors.initials: H
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000378:metabolism*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000178:diet therapy*; D003927:Diet, Diabetic; D005215:Fasting / Q000097:blood; D005260:Female; D006442:Glycated Hemoglobin / Q000378:metabolism*; D006801:Humans; D008297:Male; D008875:Middle Aged; D019518:Postprandial Period
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin; C517652:hemoglobin A1c protein, human