The diagnostic value of the histamine release test in food allergy.

One hundred and nine patients were selected in this study. All had food allergies (Urticaria, Quincke's Oedema and Bronchial Asthma) diagnosed by either clinical history or skin test results later confirmed by oral challenge. Since many of these patients had multiple sensitivities to various food allergens, the study was performed on 175 blood samples classifying the results according to personal history and results of the skin test.

Effects of immunotherapy on histamine release: a study in allergy to dermatophagoides and house dust.

A group of 56 patients with allergy to house dust and dermatophagoides, and 50 healthy controls were studied. The histamine release test was carried out on these patients using the above mentioned antigens, and the results were evaluated considering the possible variations with respect to specific immunotherapy. The results showed that: --basal histamine values were increased in patients with respect to controls.