Alvarado score		Pediatric Appendicitis Score		Appendicitis Inflammatory Response score
Sign/symptom	Points	Sign/symptom	Points	Sign/symptom	Points
Migration of pain	1	Migration of pain	1	Vomiting	1
Anorexia	1	Anorexia	1	Right Iliac fossa pain	1
Nausea/vomiting	1	Nausea/vomiting	1	Rebound pain, light	1
Right lower quadrant tenderness	2	Right lower quadrant tenderness	2	Rebound pain, medium	2
				Rebound pain, strong	3
Rebound pain	1	Rebound pain	2	Temperature ≥ 38.5°C (101.3°F)	1
Temperature ≥ 37.3°C (99.1°F)	1	Right lower quadrant pain with coughing/hopping/percussion	2	Leukocytosis ≥ 10,000 to 14,900 per μL (10.0 to 14.9 × 109 per L)	1
Leukocytosis ≥ 10,000 per μL (10.0 × 109 per L)	2	Temperature ≥ 38°C (100.4°F)	1	Leukocytosis ≥ 15,000 per μL (15.0 × 109 per L)	2
PMN ≥ 75%	1	Leukocytosis ≥ 10,000 per μL	1
Total possible score	10	PMN ≥ 75%	1	PMN 70% to 84%	1
		Total possible score	12	PMN ≥ 85%	2
				CRP 10 to 49 g per L	1
				CRP ≥ 50 g per L	2
				Total possible score	12