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Adult qSOFA Criteria Score

Calculate adult qsofa criteria score with preserved observation controls, units and local arithmetic.

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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.

Formula and method

The worked example gives q_sofa = 3.

One point each for altered mentation, respiratory rate ≥22/min and systolic pressure ≤100 mmHg.

Worked example

Enter these known values and leave the other values blank.

Respiratory rate (RR)
≥ 22 breaths per minute
Glasgow Coma Scale (GCS) score
< 15 pts
Systolic blood pressure (SBP)
≤ 100 mmHg
qSOFA score
3 pts

Assumptions and limitations

  • The 2016 Sepsis-3 qSOFA model describes adults with suspected infection outside the ICU. A score below 2 does not exclude sepsis. The 2026 Surviving Sepsis Campaign recommends NEWS/NEWS2, MEWS or SIRS over qSOFA as a single hospital screening tool.
  • Use measured or clinician-assessed inputs. This arithmetic does not make a diagnosis or recommend treatment. Supported editable inverses are mathematical relationships, not inferred clinical observations.

Common questions

What does this result mean?

The 2016 Sepsis-3 qSOFA model describes adults with suspected infection outside the ICU. A score below 2 does not exclude sepsis. The 2026 Surviving Sepsis Campaign recommends NEWS/NEWS2, MEWS or SIRS over qSOFA as a single hospital screening tool.

Does this tool diagnose a condition?

No. It evaluates the stated observations or laboratory relationship; assessment and management require the full clinical context.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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