Suspected infection · Risk flag
qSOFA
Count the three bedside variables introduced with Sepsis-3 as a prompt to investigate organ dysfunction.
Patient factors
Select one answer per row
Private by design. Values are calculated on this device and are not saved or sent to analytics.
Result
Complete all factors
The score and its interpretation band will appear here.
Evidence packet
What this tool is based on
This versioned record keeps the citations, equation or decision rule, units, test coverage, intended population, and exclusions attached to the tool.
How evidence review works →Adults with suspected infection in whom qSOFA is being used as a bedside prognostic prompt, not a solitary screening test.
One point each for respiratory rate ≥22/min, systolic blood pressure ≤100 mm Hg, and altered mentation.
Respiratory rate is breaths/min and systolic blood pressure is mm Hg; the interface records threshold categories.
All three variables, incomplete state, 0–3 range, and ≥2 boundary.
Do not skip
Limitations and exclusions
- A low score does not rule out sepsis.
- Do not use qSOFA as the only sepsis screening tool.
- The score does not diagnose sepsis or identify the infection source.
- Act on clinical deterioration regardless of the point total.
One clearly labeled, contextually relevant sponsor may support this reference area. Sponsorship will never interrupt inputs, obscure results, influence formulas, or imply clinical endorsement.
About this tool
qSOFA Score Calculator
Use this qSOFA calculator to count altered mentation, respiratory rate, and systolic blood-pressure criteria in a patient with suspected infection.
qSOFA is a risk flag, not a stand-alone sepsis diagnosis or screening replacement. Interpret it with the full examination, laboratory data, trajectory, and current protocol.