Name the two tests generally used to diagnose allergy and describe any one of them.

The two tests generally used to diagnose allergy are:

1. Skin prick test.
2. Blood testing

Blood testing — A sample of patient's blood is sent to a laboratory for analysis. Multiple allergens can be detected with a single blood sample. The test measures the concentration of specific antibodies in the blood. The quantitative allergy blood result can help determine what a patient is allergic to, help predict and follow the disease development, estimate the risk of a severe reaction, and explain cross-reactivity.