Diagnose DKA if:[51][42][17]

  • Blood ketones are ≥3.0 mmol/L OR there is ketonuria (more than 2+ on standard urine sticks) AND 

  • Blood glucose is >11.1 mmol/L OR known diabetes 

    • This blood glucose cut-off is recommended in the 2020 Joint British Diabetes Societies (JBDS) guideline "Diabetes at the front door" and supersedes the 11.0 mmol/L cut-off recommended in the 2013 JBDS guideline "The management of diabetic ketoacidosis in adults".[42][52]


  • Bicarbonate (HCO3-) is <15.0 mmol/L AND/OR venous pH is <7.3. 

Rarely, patients present with euglycaemic DKA and have a normal blood glucose level.[89][17]

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