Alvarado Score for Acute Appendicitis

Likelihood of appendicitis based on symptoms, signs, and lab data.

Signs

Right Lower Quadrant Tenderness

Elevated Temperature (37.3°C or 99.1°F)

Rebound Tenderness

Symptoms

Migration of Pain to the Right Lower Quadrant

Anorexia

Nausea or Vomiting

Laboratory Values

Leukocytosis > 10,000

Leukocyte Left Shift

Interpretation

Source: Alvarado A. A practical score for the early diagnosis of acute appendicitis. Ann Emerg Med. 1986 May;15(5):557-64. PMID: 3963537.
Copy Results Reset Print