Patent ID: 6887672

Claim:
A method to detect IgE comprising: (a) contacting an isolated equine Fc Îµ RÎ± molecule comprising an amino acid sequence selected from the group consisting of SEQ ID NO:2, SEQ ID NO:7, SEQ ID NO:12 and amino acid sequences at least 95% identical to an amino acid sequence selected from the group consisting of SEQ ID NO:2, SEQ ID NO:7, and SEQ ID NO:12, wherein said molecule comprises an IgE binding domain and binds to IgE, with a putative IgE-containing composition under conditions suitable for formation of a Fc Îµ RÎ± molecule:IgE complex; and (b) determining the presence of IgE by detecting said Fc Îµ RÎ± molecule:IgE complex, the presence of said Fc Îµ RÎ± molecule:IgE complex indicating the presence of IgE.