LRINEC Score calculator
Result
0/13
Score ≤5 — low risk (~50% PPV)
How to use it
- 1
6 laboratory values from admission bloods. CRP ≥150 = 4 pts (single highest weight).
- 2
Score ≥6. Intermediate-high: CT/MRI to look for gas tracking along fascia planes.
- 3
Clinical context essential. LRINEC validated retrospectively. Do NOT use to rule out NF if clinical suspicion is high.
When to use it
- Soft tissue infection with concern for NF
- Rapidly spreading cellulitis, pain out of proportion, skin necrosis, gas crepitus.
- Score ≥8
- PPV 93% for NF — surgical emergency: debridement within hours.
- Normal LRINEC does not rule out NF
- Sensitivity ~80%. Clinical suspicion must always prevail.
A reference for clinicians and students, not medical advice. A score supports a decision; it does not make one. Check every result against the patient in front of you and your local protocol.
At a glance
- Specialty
- Infectious diseases
- Inputs
- 6
- Type
- Formula
