IgE is an immune marker that can be measured via a blood sample. – IgE can rise when the body’s immune system starts … an allergic reaction. Elevated IgE has been seen following botox injections.
The link below tells about a 35-year-old woman who developed Anaphylaxis (life-threatening allergic reaction) after botox injection. She had elevated total serum IgE level. The woman had previously received botox injections without problems.