Double electroimmunodiffusion: a rapid diagnostic test for canine coccidioidomycosis.

Double electroimmunodiffusion (EID) was adapted for detection of antibodies to Coccidioides immitis. In a limited experiment with canine serums, the test was found to be qualitatively as sensitive as the complement-fixation (CF) test. Advantages of EID over CF are that EID takes only 30 minutes to perform and requires only 10 mul each of antigen and antibody.