Warm auto-antibody with anti-G specificity.

A case involving a warm auto-antibody with anti-G specificity is described. The patient has the most probable genotype of R1R2. At the time of admission this patient had a positive direct antiglobulin test with no detectable antibody in the serum. The use of absorption and elution techniques suggested the presence of a specific antibody with specificity confirmed using the rare cells rG. This auto-antibody did not seem to cause significant in vivo hemolysis.