Which investigation best confirms Diabetic ketoacidosis?
Answer and explanation
Correct answer: C. Blood ketone measurement with an arterial blood gas
- Step 1: The test that best confirms Diabetic ketoacidosis is: blood ketone measurement with an arterial blood gas.
Answer
Blood ketone measurement with an arterial blood gas.
Why not the others: 'HbA1c': it reflects control over three months, not the acute state. 'Urine dipstick for protein': it screens for kidney disease. 'Serum amylase': it is raised in pancreatitis, which may accompany DKA but does not confirm it.
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