IgE Test Results in 2026: What High Levels Actually Signal & When Your Number Demands an Allergist Visit
Your IgE number tells a specific story about your immune system — and levels above 300 kU/L often signal allergic conditions that go undertreated for years. This 2026 guide explains normal ranges by age, what dangerously high levels mean, real test costs, and the exact threshold that should send you straight to an allergist.