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LRINEC Calculator (Necrotizing Fasciitis Risk)

Health & Fitness

Calculate the LRINEC score used to help distinguish necrotizing fasciitis from other soft tissue infections.

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mg/L
0 mg/L500 mg/L
x10^9/L
0.5 x10^9/L60 x10^9/L
g/dL
3 g/dL20 g/dL
mmol/L
100 mmol/L180 mmol/L
mg/dL
0.1 mg/dL15 mg/dL
mg/dL
30 mg/dL800 mg/dL

LRINEC Score

1

Total LRINEC score out of 13. Educational reference only, not a substitute for clinical judgment.

Necrotizing Fasciitis Risk

Low risk

General necrotizing fasciitis risk category based on the total score.

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Odeh Ahwal

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Odeh Ahwal
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Frequently Asked Questions

What is LRINEC used for?

LRINEC (Laboratory Risk Indicator for Necrotizing Fasciitis) uses 6 common lab values to help distinguish necrotizing fasciitis, a rare but life-threatening soft tissue infection, from less severe skin and soft tissue infections.

How reliable is LRINEC for ruling out necrotizing fasciitis?

A low LRINEC score does not fully rule out necrotizing fasciitis, since the condition can progress rapidly and lab values may not yet reflect severity early on. Clinical suspicion and direct surgical exploration remain critical when the condition is suspected.

What LRINEC score suggests high risk?

A score of 8 or higher is generally considered high risk, warranting urgent surgical evaluation, though clinical judgment should never be overridden by the score alone given how dangerous a missed diagnosis can be.

Is this calculator a substitute for medical advice?

No. This is an educational reference implementation of the standard LRINEC score, not a substitute for urgent clinical and surgical assessment. Suspected necrotizing fasciitis is a medical emergency.

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