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Alvarado Score

Alvarado Score: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

Alvarado Score

Pain migration to the right iliac fossa (1 = yes)
Anorexia (1 = yes)
Nausea or vomiting (1 = yes)
Right iliac fossa tenderness (1 = yes)
Rebound tenderness (1 = yes)
Body temperature°C
White blood cells×10⁹/L
Neutrophils%
Alvarado score
0points
Alvarado Score: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Appendicitis
Unlikely

More about: Alvarado Score

What it calculates

The “Alvarado Score” calculator computes Alvarado score in points from 8 parameters: pain migration to the right iliac fossa (1 = yes), anorexia (1 = yes), nausea or vomiting (1 = yes), right iliac fossa tenderness (1 = yes), rebound tenderness (1 = yes), body temperature (°C), white blood cells (×10⁹/L), neutrophils (%).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Pain migration to the right iliac fossa (1 = yes) = 0, Anorexia (1 = yes) = 0, Nausea or vomiting (1 = yes) = 0, Right iliac fossa tenderness (1 = yes) = 0, Rebound tenderness (1 = yes) = 0, Body temperature = 36.8 °C, White blood cells = 8 ×10⁹/L, Neutrophils = 65 % the result is 0 points.

How to use

  1. Enter pain migration to the right iliac fossa (1 = yes), anorexia (1 = yes), nausea or vomiting (1 = yes), right iliac fossa tenderness (1 = yes), rebound tenderness (1 = yes), body temperature, white blood cells and neutrophils — each field above is adjustable with a slider.
  2. Alvarado score (points) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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