qSOFA Score Calculator

Quick Sepsis-Related Organ Failure Assessment (qSOFA) for sepsis screening (0–3).

For educational and clinical reference. Not a substitute for medical judgment. See the medical disclaimer.
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Interpretation
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References

  1. Singer M, Deutschman CS, Seymour CW, et al. The Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3). JAMA. 2016;315(8):801-810.

What is qSOFA Score?

The qSOFA (quick Sequential Organ Failure Assessment) score is a bedside screening tool for identifying patients with suspected infection who are at increased risk of poor outcomes outside the intensive care unit. Introduced as part of the Sepsis-3 consensus definitions by Singer et al. in 2016, it uses three clinical criteria: altered mental status (Glasgow Coma Scale <15), respiratory rate ≥22 breaths/min, and systolic blood pressure ≤100 mmHg. Each is worth one point. A qSOFA ≥2 in a patient with suspected infection predicts greater in-hospital mortality and prolonged ICU stay, prompting closer monitoring, lactate measurement, and consideration of sepsis.

How to use

  1. Check the 3 bedside criteria: mental status, RR, SBP.
  2. A score ≥ 2 in suspected infection identifies high mortality risk.
  3. Use to trigger sepsis workup; do not use as the sole sepsis screen.

Frequently asked questions

What is qSOFA?

Quick Sepsis-Related Organ Failure Assessment — a bedside score (0–3) to identify non-ICU patients at high risk of poor outcomes from suspected infection.

When is qSOFA positive?

≥ 2 of 3 criteria. A positive qSOFA in suspected infection is associated with 3- to 14-fold higher mortality.

Should qSOFA be used for sepsis screening?

qSOFA is a prompt to evaluate for sepsis, not a screening tool. NEWS-2 and SIRS criteria may detect at-risk patients earlier.

qSOFA vs SOFA?

Full SOFA requires lab/ventilator parameters and is used in ICU. qSOFA is a bedside surrogate without labs, suitable for ED/ward triage.

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