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Alvarado Score For Appendicitis Calculator

Work out alvarado score for appendicitis instantly with clear inputs, formula shown and shareable results.

About Alvarado Score For Appendicitis Calculator

Adds the eight Alvarado items across symptoms, signs and laboratory findings to give a 0 to 10 appendicitis likelihood score.

Formula

Alvarado (MANTRELS)

Migration 1, anorexia 1, nausea 1, RIF tenderness 2, rebound 1, elevated temperature 1, leucocytosis 2, neutrophil shift 1 (maximum 10)

Worked example

With the default values below, Alvarado Score For Appendicitis Calculator returns Alvarado score of 7. Change any input above and every figure here is recalculated in your browser.

Inputs used

Symptom pointsaccepts 0–3
2
Sign pointsaccepts 0–4
3
Laboratory pointsaccepts 0–3
2

Results

Alvarado score
7
Probability band
Probable appendicitis
Suggested next step
Surgical assessment
Maximum possible score
10

Step by step

  1. 1Values used
  2. 2Alvarado (MANTRELS)
  3. 3Alvarado score= 7
  4. 4Probability band= Probable appendicitis
  5. 5Suggested next step= Surgical assessment
  6. 6Maximum possible score= 10

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

How well does it perform in women?

Specificity is lower in women of reproductive age, where gynaecological causes mimic the presentation.

Is there a paediatric version?

The Paediatric Appendicitis Score is preferred in children and uses cough or percussion tenderness instead of rebound.

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Alvarado Score For Appendicitis Calculator | Calcrivo