Is qSOFA a diagnosis of sepsis?

No. qSOFA is a bedside prompt, not a diagnostic test. In a patient with suspected infection, a qSOFA of 2 or more flags a higher risk of poor outcomes and should prompt fuller assessment (lactate, full SOFA) and escalation — it does not rule sepsis in or out.

What qSOFA score is concerning?

A score of 2 or 3 (out of 3) identifies patients with suspected infection at greater risk of in-hospital mortality or prolonged ICU stay, per Sepsis-3.

Does qSOFA replace the full SOFA score?

No. qSOFA is a rapid bedside prompt using three clinical signs; the full SOFA score grades six organ systems and is used to define organ dysfunction in Sepsis-3.

qSOFA Score Calculator — Quick Sepsis Risk Prompt

Quick SOFA: three bedside signs that flag a patient with suspected infection at higher risk of a poor outcome. Change any value and the score — and the reason for it — updates instantly.

What qSOFA is

qSOFA (quick Sequential Organ Failure Assessment) was introduced with the 2016 Sepsis-3 consensus as a fast, bedside prompt. In a patient with suspected infection, it uses three readily available signs to identify those at greater risk of in-hospital death or a prolonged ICU stay. It needs no laboratory tests.

When to use it

Use qSOFA at the bedside — in the ward, emergency department or pre-ICU — when infection is suspected, to decide who needs closer observation and a fuller work-up. It is a prompt to look harder, not a screening test to be applied in isolation, and not a substitute for clinical judgment.

How it is calculated

One point each, total 0–3:

Respiratory rate ≥ 22 /min
Altered mentation — GCS < 15 (any new drop)
Systolic blood pressure ≤ 100 mmHg

A score of ≥ 2 marks higher risk and should prompt escalation: measure lactate, calculate the full SOFA score, and reassess for organ dysfunction and source control.

Limitations

qSOFA has limited sensitivity for early sepsis — a score below 2 does not exclude it.
It is a risk-stratification prompt, not diagnostic of sepsis on its own.
Interpretation bands are population-level and approximate — never a patient-specific prediction.
Later guidance cautions against qSOFA as a sole screening tool; combine with clinical assessment and local protocols.

References

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.
Seymour CW, Liu VX, Iwashyna TJ, et al. Assessment of Clinical Criteria for Sepsis (qSOFA validation). JAMA. 2016;315(8):762–774.

Related scores

UltraCare

This is one instrument on a much larger chart.

Inside the UltraCare workspace, qSOFA recomputes itself on every charted value — alongside SOFA, NEWS2, APACHE II, deterioration signals and I-PASS handovers, admission to discharge. The clinician stays in the loop.

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