Immediate or non-immediate hypersensitivity reactions to contrast media occur in about 3% of intravenous Contrast Media applications. They are a concern for radiologists and cardiologists. The basophil activation test is very helpful for diagnosis of patients with Contrast Media hypersensitivity. Previous reactors have an increased risk to develop repeated reactions. At the time beeing there

Usefulness of the basophil activation tests in monitoring the immune response to bee venom immunotherapy and in identifying the culprit insect venom in case of double positivity to both wasp and honey bee venom.