Does anyone do Antigen testing using the IgG gel card? I know that there currently isn't any gel cards for Anti-K,S or Fya available, but I was interested in doing antigen testing with IgG gel card by using a 0.8% suspension of the red cells with 25 microliters of the anti sera, incubating at 37 degress for 15min before centrifuging. I have been doing a correlation between the tube and gel card method obtaining great results.