Glycemic parameters in patients with new-onset diabetes during COVID-19 pandemic are more severe than in patients with new-onset diabetes before the pandemic: NOD COVID India Study

Diabetes Metab Syndr. 2021 Jan-Feb;15(1):215-220. doi: 10.1016/j.dsx.2020.12.033. Epub 2020 Dec 29.


Background and aims: It is not known if new onset diabetes during Coronavirus-19 disease (COVID-19; NOD COVID) is phenotypically or biochemically different than new onset diabetes before COVID-19 (NOD).

Methods: All adults diagnosed with new onset diabetes from during the time of COVID-19 were compared with new onset diabetes prior to COVID-19 from two tertiary care hospitals in Chennai and Delhi. RTPCR test for SARS-CoV-2 virus was done as appropriate, and COVID-19 antibody test was done in all other NOD COVID patients.

Result: A total of 555 patients with new onset diabetes were included in the study (282 NOD and 273 NOD COVID patients). Patients with NOD COVID had higher fasting and post prandial blood glucose and glycated hemoglobin levels vs. NOD patients. Both the groups had high average body mass index; ∼28 kg/m2. Interestingly, fasting C-peptide levels were significantly higher in the NOD COVID group vs. NOD group. There was no difference in C-peptide levels or glycemic parameters between the COVID-19 antibody positive and negative NOD COVID cases.

Conclusion: Individuals who were diagnosed with diabetes during COVID-19 epidemic (NOD COVID) do not significantly differ from those diagnosed before COVID-19 in symptomatology, phenotype, and C-peptide levels but they had more severe glycemia.

Keywords: COVID-19; COVID-19 antibody; Diabetes; New-onset diabetes; Type 2 diabetes.

Publication types

  • Comparative Study
  • Multicenter Study

MeSH terms

  • Adult
  • Blood Glucose / metabolism*
  • COVID-19 / blood*
  • COVID-19 / diagnosis
  • COVID-19 / epidemiology*
  • Diabetes Mellitus, Type 2 / blood*
  • Diabetes Mellitus, Type 2 / diagnosis
  • Diabetes Mellitus, Type 2 / epidemiology*
  • Female
  • Glycemic Index / physiology*
  • Humans
  • India / epidemiology
  • Male
  • Middle Aged
  • Pandemics
  • Tertiary Care Centers / trends


  • Blood Glucose