SOFA Score Calculator
Calculate the Sequential Organ Failure Assessment (SOFA) score for ICU patients. SOFA assesses 6 organ systems (respiratory, coagulation, liver, cardiovascular, CNS, renal) on a 0-4 scale each. Total score 0-24.
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6 organ systems 0-4 each Total 0-24
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Why: Essential for sepsis diagnosis (Sepsis-3) and mortality prediction.
How: Score each organ 0-4; sum for total. SOFA ≥ 2 with infection = sepsis.
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🫁 Respiration
🩸 Coagulation & Liver
❤️ Cardiovascular
🧠 CNS & Renal
SOFA Score
📊 SOFA Score Gauge
📊 Organ System Scores
📊 Mortality by SOFA Range
📊 Organ Dysfunction Profile
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For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
🏥 Health Facts
6 organ systems, 0-4 each
— Vincent 1996
Sepsis-3: SOFA ≥ 2
— JAMA 2016
The Sequential Organ Failure Assessment (SOFA) score evaluates 6 organ systems (respiratory, coagulation, liver, cardiovascular, CNS, renal) on a 0-4 scale each. Total score 0-24. With Sepsis-3 (2016), SOFA became central to sepsis diagnosis: infection + SOFA ≥ 2 = sepsis. Mortality correlates strongly: SOFA 0-1 <10%, SOFA 15+ >80%.
Sources: Vincent et al. 1996, Sepsis-3 Consensus 2016.
Key Takeaways
- • SOFA assesses 6 organ systems: respiration, coagulation, liver, cardiovascular, CNS, renal
- • Each organ scored 0-4; total 0-24. Higher = worse prognosis
- • Sepsis-3: Infection + SOFA ≥ 2 = Sepsis. Septic shock = Sepsis + vasopressors + lactate > 2
- • Daily SOFA trend more informative than single value
Did You Know?
How Does SOFA Work?
Organ Systems
Respiration (PaO2/FiO2), coagulation (platelets), liver (bilirubin), cardiovascular (MAP/vasopressors), CNS (GCS), renal (creatinine, urine output).
Scoring
Each organ 0-4: 0 = normal, 1-2 = mild-moderate, 3-4 = severe/failure. Sum for total.
Interpretation
SOFA ≥ 2 with infection = sepsis. Track daily for trajectory.
Expert Tips
SOFA Score Reference
| Score Range | Classification | Mortality |
|---|---|---|
| 0-1 | No Organ Dysfunction | Less than 10% |
| 2-6 | Mild Dysfunction | 15-20% |
| 7-9 | Moderate Dysfunction | 30-40% |
| 10-14 | Severe Dysfunction | 50-60% |
| 15-24 | Critical Dysfunction | Greater than 80% |
Frequently Asked Questions
What is the SOFA score?
The Sequential Organ Failure Assessment (SOFA) evaluates 6 organ systems (respiratory, coagulation, liver, cardiovascular, CNS, renal) on a 0-4 scale each. Total score 0-24. Higher scores indicate worse organ dysfunction.
How is SOFA used for sepsis?
Per Sepsis-3, sepsis = suspected infection + SOFA ≥ 2 (or acute increase ≥ 2). Septic shock = sepsis + vasopressors required + lactate > 2 mmol/L.
What does each SOFA organ score mean?
Each organ scored 0-4: 0 = normal, 1-2 = mild-moderate dysfunction, 3-4 = severe dysfunction/failure. Total 0-24.
When should SOFA be calculated?
On ICU admission and daily for trend. Also when sepsis is suspected outside ICU (after qSOFA screening).
What is SOFA mortality correlation?
SOFA 0-1: <10% mortality. SOFA 2-6: 15-20%. SOFA 7-9: 30-40%. SOFA 10-14: 50-60%. SOFA 15+: >80%.
How does SOFA differ from qSOFA?
SOFA requires labs and full assessment; used in ICU. qSOFA is 3 bedside criteria (RR, BP, mentation) for rapid screening outside ICU.
Key Statistics
Official Data Sources
⚠️ Disclaimer: This calculator is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
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