Which test is mostly favoured for testing allergy, prick test or blood test? Why?

Blood test is mostly favoured for testing allergy. An allergy blood test is quick and simple, and can be ordered by a licensed health care provider. Unlike skin-prick testing, a blood test can be performed irrespective of age, skin condition, medication, symptom, disease activity, and pregnancy. Thus, we can say that blood test is a better test as compared to prick test.