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To assess immunoglobulin E (IgE) levels in order to identify the presence of an allergic or inflammatory immune response.
Serum collected in a gold-, red-, or red/gray-top tube. Place separated serum into a standard transport tube within 2 hr of collection.
|Age||Conventional & SI Units|
|Newborn||Less than 12 units/L|
|Less than 1 yr||Less than 50 units/L|
|2–4 yr||Less than 200 units/L|
|5–9 yr||Less than 300 units/L|
|10 yr and older||Less than 100 units/L|