Table 2: Interpretation of CDC-XM results [11].

T cell XM B cell XM Explanation
Negative Negative No significant DSA
Very low titre DSA
Non-complement fixing DSA
Positive Positive HLA antibodies
Autoantibodies
Non-HLA antibodies IgG
IgM antibody
Recent treatment with thymoglobulin/alemtuzumab
Negative Positive DSA to HLA class II only
Low titre HLA class-I DSA
Treatment with rituximab