Type 1 diabetes

Point-of-Care Capillary Blood Ketone Measurements and the Prediction of Future Ketoacidosis Risk in Type 1 Diabetes

Diabetes CarePublished Secondary analysis of placebo-assigned participants in an adjunct-to-insulin medication trial program

Authors' conclusion

This proof of concept that routine capillary ketone surveillance can identify individuals at high risk of future DKA implies a role for future technologies including continuous ketone monitoring.

Study context

Population
Placebo-assigned participants with T1D in an adjunct-to-insulin medication trial program; fasted capillary blood ketones measured twice per week in a 2-month baseline period
Participants
484 participants
Comparison
Patient cases vs control patients
  • Patient casesn = 12
Primary endpoint
Trial-adjudicated DKA
Follow-up
6 to 12 months
Methodological detailsprognostic accuracy analysis, previously collected data
  • Prognostic accuracy analysis
  • Previously collected data

Primary result

As reported in the abstract

P = 0.002

Nonparametric AUC for maximum ketone levels
0.77 (95% CI 0.66-0.88)
Ketone ≥0.8 mmol/L: sensitivity
64%
Ketone ≥0.8 mmol/L: specificity
78%
Ketone ≥0.8 mmol/L: positive likelihood ratio
2.9
Ketone ≥0.8 mmol/L: negative likelihood ratio
0.5

Further findings

Diabetic ketoacidosis (DKA) events

Participants with DKA
12 of 484
Time to DKA, median (IQR 43, 199) days
105

Original publication

Point-of-Care Capillary Blood Ketone Measurements and the Prediction of Future Ketoacidosis Risk in Type 1 Diabetes. Diabetes Care. Published 24 August 2023. doi:10.2337/dc23-0840

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