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Appendicitis Inflammatory Response (AIR) Score

SurgeryBeta toolThis tool is in beta. It has undergone internal validation but still requires additional testing. Always confirm the data entered and the results obtained before clinical use. It should not be used as the sole basis for clinical decisions.
Select none, light, medium, or strong.

Adds 1 point at 38.5 °C or higher.

°C

1 point from 10.0 to 14.9; 2 points at 15.0 or higher.

×10^9/L

1 point from 70% to 84%; 2 points at 85% or higher.

%

1 point from 10 to 49 mg/L; 2 points at 50 mg/L or higher.

mg/L
VomitingVomiting adds 1 point.
Right lower quadrant / right iliac fossa painLocalized pain adds 1 point.

Clinical noticeEducational adjunct only; do not use as a stand-alone diagnosis.

Context and use

AIR score = vomiting + right lower quadrant pain + rebound severity + temperature threshold + WBC band + neutrophil band + CRP band. Risk category = low for 0-4, intermediate for 5-8, high for 9-12.

Certifications and Compliance

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