Why should omega-5 gliadin (f416) be used together with Gliadin (f98)?

Why should omega-5 gliadin (f416) be used together with Gliadin (f98)?
While Gliadin (f98) has a high sensitivity for detecting sensitization to gliadins, the specificity of w-5 gliadin (f416) is higher. Available data – published and preliminary – indicate that by combined testing for gliadin- and w-5 gliadin-specific antibodies most patients with immediate type wheat allergy, and WDEIA – see Hofmann et al. 2013., can be identified. <img style="vertical-align: middle; border: black 2px solid;" src="/FAQ/Allergy/Specific%20IgE/Components/Wheat%20CAP%20testing.png" alt="" width="500" height="247" /> The majority of patients with wheat symptoms are sensitized to both gliadin and omega-5 gliadin. &nbsp;
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As in all diagnostic testing, the diagnosis is made by the physican based on both test results and the patient history.