qSOFA combines three bedside findings used to identify higher-risk patients with suspected infection.
qSOFA Score (quick SOFA) Calculator
Form
Results
qSOFA score
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Table of Contents
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What is qSOFA Score?
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How to Use This Calculator
- Enter or select Glasgow Coma Scale (GCS) score, Respiratory rate (RR), Systolic blood pressure (SBP).
- Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
- Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
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Formula Used
Add one point each for altered mentation, respiratory rate ≥22/min and systolic BP ≤100 mmHg.
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Variables Explained
| Input | What it means |
|---|---|
| Glasgow Coma Scale (GCS) score | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| Respiratory rate (RR) | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| Systolic blood pressure (SBP) | The upper blood-pressure reading, normally stated in mmHg. |
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Worked Example
Meeting the respiratory-rate and blood-pressure criteria gives a score of 2.
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Why Use This Calculator?
Use the calculation to make the method and its inputs easier to check with a healthcare professional. Its meaning depends on the clinical setting and on whether the underlying method is appropriate for that person.
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Common Mistakes
- qSOFA alone neither diagnoses nor rules out sepsis, and a low score must not delay assessment.
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Frequently Asked Questions
Is this result a diagnosis or treatment instruction?
No. It describes a calculation or score from the supplied information. A qualified clinician must check the measurements, the method’s applicability and the wider clinical picture.
Can I enter the units from any lab report?
Use the units specified in the form and select a conversion only where the page provides one. Different substances need different conversion factors; a mismatch can produce a plausible but incorrect result.
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