[Environment and serum IgE]

Immunobiological diagnosis of allergy by measurement of total and specific IgE (by the technique of the CAP System on UNICAP) remains very valuable, especially if it is possible to repeat the measurements to follow the development of the patient. Concerning an observation of one patient who presented a rhinotracheitis that developed over 10 years and was linked clinically to guinea pig hair, the measurement of total and specific IgE confirmed the diagnosis and favourable clinical development was corroborated by the significant parallel diminution of total and specific IgE.