The measurement of total serum IgE levels in rats

A direct solid phase radioimmunoassay for the measurement of total serum IgE in the rat has been developed. The assay is very sensitive with a lower limit of detection of 5 ng/ml. The intra and interassay reproducibility proves to be very acceptable and the specificity is demonstrated by looking at the interferen-e by other immunoglobulins. Preliminary results on total serum IgE levels are given.