High IgE levels are not usually a sign of cancer. IgE, or Immunoglobulin E, is an antibody produced by the immune system that helps to fight off allergens and other foreign substances. High levels of IgE are most commonly associated with allergies and asthma. In some cases, however, elevated IgE levels can be indicative of certain types of cancer, such as kidney cancer, lymphoma, and leukemia.
In cases where IgE is higher than normal, it may be prudent to have your doctor order additional tests to rule out cancer. These tests can include imaging scans, blood work, and biopsies. If cancer is suspected, a doctor may recommend further testing, which could include a CT scan, MRI, and/or PET scan to look for tumors or other signs of cancer.
It is important to remember that high IgE levels are not always indicative of cancer. In many cases, high IgE levels can be caused by allergies, asthma, or other non-cancerous conditions. If you have concerns about your IgE levels, it is best to speak with your doctor to discuss your individual situation and determine the best course of action.