PUBLIC LIBRARY / SCORE

qSOFA (quick SOFA)

Identifies patients outside the ICU with suspected infection and higher risk of death or prolonged intensive-care admission.

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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

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Method · Limits of application

qSOFA/Sepsis-3/Seymour 2016: RR≥22/SBP≤100/altered mental status, 0–3; not recommended as sole screening by SSC 2021

qSOFA 2016 is a risk-assessment tool for adults with suspected infection, not a diagnosis or a stand-alone test to rule out sepsis. A low score does not eliminate clinical suspicion. SSC 2021 recommends against qSOFA as the sole screening tool; official SSC 2026 guidance continues to favor other tools for hospital screening. Emergency assessment and treatment must not wait for the score. This adult threshold does not establish pediatric application.

Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Respiratory rate ≥ 22 breaths/min
Altered mental status (Glasgow < 15)
Systolic pressure ≤ 100 mmHg

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

One point each: respiratory rate ≥ 22/min, altered mental status and systolic pressure ≤ 100 mmHg. Positive at 2 or more points.

References

Identifier: qsofa

Original clinical content: Brazilian Portuguese.

Method version

qSOFA/Sepsis-3/Seymour 2016: RR≥22/SBP≤100/altered mental status, 0–3; not recommended as sole screening by SSC 2021

qsofa@native-2026-10-03+70fa4643bb7d

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Respiratory rate ≥ 22 breaths/min: Yes
Altered mental status (Glasgow < 15): No
Systolic pressure ≤ 100 mmHg: No

{
  "fr": true,
  "mental": false,
  "pas": false
}

Expected result

{
  "score": 1,
  "level": "low"
}

Actual result

{
  "score": 1
}

Case 2

reference-002

Inputs

Respiratory rate ≥ 22 breaths/min: Yes
Systolic pressure ≤ 100 mmHg: Yes
Altered mental status (Glasgow < 15): No

{
  "fr": true,
  "pas": true,
  "mental": false
}

Expected result

{
  "score": 2,
  "level": "high"
}

Actual result

{
  "score": 2
}

Case 3

reference-003

Inputs

Respiratory rate ≥ 22 breaths/min: Yes
Altered mental status (Glasgow < 15): Yes
Systolic pressure ≤ 100 mmHg: Yes

{
  "fr": true,
  "mental": true,
  "pas": true
}

Expected result

{
  "score": 3,
  "level": "high"
}

Actual result

{
  "score": 3
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.