Moderate

In patients with asthma due to an allergic cause the serum levels of which immunoglobulin increase____________________?

Correct answer: D. IgE

  • A. IgD
  • B. IgM
  • C. IgA
  • D. IgE

Explanation

IgE mediates immediate allergic reactions by binding mast cells and basophils; allergen exposure can therefore raise serum IgE. The other listed immunoglobulins are not the characteristic antibody of atopy.

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