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Calcimator

Allergy Skin Test Interpreter Calculator

Wheal and flare measurement interpretation.

Inputs

Results

Reaction grade (0-4+)

3

Clinically positive (0/1)1
Net wheal (mm)5
Wheal/histamine ratio1.25
Sensitivity level (0-4)2
Test valid (0/1)1
Flare Significant1
How to Use This Calculator
  1. Enter Wheal diameter (mm), Flare diameter (mm), and Histamine control wheal (mm).
  2. Set Saline control wheal (mm).
  3. Review the Reaction grade (0-4+) result.
  4. Use Clinically positive (0/1) and Net wheal (mm) to inform your decision.
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