title: Comparison of venous plasma glucose and capillary whole blood glucose in the diagnosis of gestational diabetes mellitus: a community-based study.
abstract: BACKGROUND
  Universal screening for gestational diabetes mellitus (GDM) is advocated in Indian women as they have the highest frequency of GDM among the South Asian population. For this the diagnostic procedure has to be simple, economical, and evidence based. Hence, this study was undertaken to compare point-of-care measured capillary whole blood glucose (CBG) with a glucometer and laboratory-estimated venous plasma glucose (VPG) and to suggest which is feasible as a diagnostic tool.
  
  
  METHODS
  Consecutive pregnant women in the third trimester were included in this study with the approval of the institutional ethical committee. They were given 75 g of oral glucose in the fasting state. After 2 h, CBG was measured by finger prick using an Accu-Chek(®) glucometer (Roche Diagnostics India Pvt. Ltd., Mumbai, India), and venous blood was drawn to estimate VPG in the laboratory by the glucose oxidase-peroxidase method. The diagnosis of GDM was based on a 2-h plasma glucose level of ≥7.8 mmol/L (World Health Organization criteria).
  
  
  RESULTS
  Among 819 pregnant women, 86 (10.5%) were diagnosed as having GDM. The CBG value at a 2-h plasma glucose level of ≥7.8 mmol/L had a sensitivity of 80.2% and specificity of 98.5% with false-positive and false-negative rates of 1.5% and 19.8%, respectively. The area under the receiver operator characteristic curve of CBG was 0.991.
  
  
  CONCLUSIONS
  The CBG value at a 2-h plasma glucose level of ≥7.8 mmol/L may be recommended for the diagnosis of GDM in healthcare centers where laboratory technology is not available.
authors: Dr. V. Seshiah Diabetes Research Institute and Dr. Balaji Diabetes Care Centre, Chennai, India.
authors: Vijayam
authors: V
authors: Balaji
authors: Balaji S
authors: BS
authors: Madhuri
authors: Arunachalam
authors: A
authors: Paneerselvam
authors: Thiyagarajah
authors: T
authors: Arthi
authors: Veerasamy
authors: V
authors: Seshiah
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000378:metabolism*; D002196:Capillaries; D003153:Community Health Services; D016640:Diabetes, Gestational / Q000097:blood / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D007194:India / Q000453:epidemiology; D011237:Predictive Value of Tests; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011295:Prenatal Care / Q000379:methods*; D015995:Prevalence; D011446:Prospective Studies; D012307:Risk Factors; D014680:Veins
chemical_list: D001786:Blood Glucose