Wheal Longest Diameter to Flare Longest Diameter Ratio Measurement

**Semantic type:** Quantitative Concept

**Definition:** A relative measurement (ratio) of the wheal longest diameter to the flare longest diameter, which form at the site of an antigenic skin response.

**Synonyms:** - WLDFLD - Wheal Longest Diam/Flare Longest Diam - Wheal Longest Diam/Flare Longest Diam - Wheal Longest Diameter/Flare Longest Diameter