qSOFA Score Calculator — free guideline decision tool
Calculate the quick SOFA (qSOFA) score to flag patients with suspected infection at risk of poor outcomes.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Respiratory rate ≥ 22/min | No |
|---|---|
| Altered mentation (GCS < 15) | No |
| Systolic BP ≤ 100 mmHg | No |
→qSOFA0/3
- Interpretation：< 2: lower risk (does not rule out sepsis).
| Respiratory rate ≥ 22/min | Yes |
|---|---|
| Altered mentation (GCS < 15) | Yes |
| Systolic BP ≤ 100 mmHg | Yes |
→qSOFA3/3
- Interpretation：≥ 2: higher risk of mortality / prolonged ICU stay.
Common questions
Does qSOFA ≥2 equal a sepsis diagnosis?
No. ≥2 flags higher risk and prompts organ assessment; Sepsis-3 diagnosis uses acute SOFA rise. Computed locally in the browser; patient data are not uploaded. For licensed clinicians only; combine with history, exam, and local protocol — not a standalone decision.
Can a score <2 exclude sepsis?
No. Limited sensitivity; a negative screen does not exclude sepsis — reassess dynamically. Computed locally in the browser; patient data are not uploaded. For licensed clinicians only; combine with history, exam, and local protocol — not a standalone decision.
How does qSOFA work with full SOFA?
qSOFA is a bedside prompt outside ICU; if ≥2 or clinically concerning, complete full SOFA, lactate, and local pathway. Computed locally in the browser; patient data are not uploaded. For licensed clinicians only; combine with history, exam, and local protocol — not a standalone decision.
Are patient data uploaded, and where is it calculated?
Computed locally in the browser; patient data are not uploaded. For licensed clinicians only; combine with history, exam, and local protocol — not a standalone decision.
How is qSOFA Score Calculator calculated in practice? Can you show a worked example?
Inputs: Respiratory rate ≥ 22/min No, Altered mentation (GCS < 15) No, Systolic BP ≤ 100 mmHg No → Result: qSOFA 0 /3（Interpretation: < 2: lower risk (does not rule out sepsis).） Inputs: Respiratory rate ≥ 22/min Yes, Altered mentation (GCS < 15) Yes, Systolic BP ≤ 100 mmHg Yes → Result: qSOFA 3 /3（Interpretation: ≥ 2: higher risk of mortality / prolonged ICU stay.）
Run qSOFA Score Calculator now
Calculate the quick SOFA (qSOFA) score to flag patients with suspected infection at risk of poor outcomes.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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