Diabetic Ketoacidosis DKA Criteria Calculator

Diabetic Ketoacidosis DKA Criteria Calculator for Endocrinology. The display says Met when all required domains are met and Not met when they are not all met; neither is a severity score. Individual domain results explain which condition changed the outcome. A not-met result does not exclude evolving, partially treated or mixed metabolic illness.

For shared guidance on choosing a tool and documenting results, read the clinical calculator workflow.

How this calculator works

The adult consensus requires all three domains: established diabetes or glucose at least 200 mg/dL; blood beta-hydroxybutyrate at least 3 mmol/L; and pH below 7.3 or bicarbonate below 18 mmol/L. The tool evaluates these logical conditions, not a point sum. It uses the blood-ketone pathway only.

When to use this calculator

Use to learn or cross-check adult diagnostic-domain logic during urgent clinical assessment. Lower glucose does not exclude DKA in someone with established diabetes. Severe symptoms, ketonemia or acidosis warrant assessment even when the complete triad is not met.

Inputs used

  • Established diabetes: yes or no
  • Glucose in mmol/L or mg/dL
  • Blood beta-hydroxybutyrate in mmol/L
  • Venous or arterial pH
  • Bicarbonate in mmol/L

Clinical interpretation

The display says Met when all required domains are met and Not met when they are not all met; neither is a severity score. Individual domain results explain which condition changed the outcome. A not-met result does not exclude evolving, partially treated or mixed metabolic illness.

Worked example

Established diabetes, glucose 180 mg/dL, beta-hydroxybutyrate 3, pH 7.28 and bicarbonate 17 meet all three domains despite glucose below 200. Without known diabetes, glucose 199.999 does not meet the glucose domain; 200 does. pH exactly 7.3 with bicarbonate exactly 18 does not meet the acidosis domain.

Limitations and safety notes

This does not grade severity, assess resolution, diagnose HHS, interpret urine ketones or prescribe fluids, insulin or potassium. Pediatric and pregnancy care require appropriate protocols. The source also permits a urine-ketone diagnostic pathway, which is outside this blood-ketone implementation. Do not delay emergency care to obtain a calculator result.

Frequently asked questions

Must pH and bicarbonate both be abnormal?

No. Acidosis is met by either pH below 7.3 or bicarbonate below 18; diabetes/glucose and ketosis domains must still both be met.

Does coma with acidosis automatically mean DKA?

No. Ketosis and the diabetes/glucose domain are also required. Coma or severe acidosis still requires urgent assessment for DKA and other causes.

References

  • 2024 adult consensus diagnostic triad: diabetes/glucose, ketonemia, and acidosis; AND across domains, OR within acidosis. https://doi.org/10.2337/dci24-0032

Editorial review and citation methodology

Maintained by the Quick Medical Calculator Editorial Team. Content record date: September 9, 2026. A content date is not evidence of independent clinical review. Individual clinical sign-off is not recorded on this page.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.

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