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Title: Complement-binding anti-Jka not detectable by DiaMed gels. Author: O'Brien P, Hopkins L, McCarthy D, Murphy S. Journal: Vox Sang; 1998; 74(1):53-5. PubMed ID: 9481863. Abstract: BACKGROUND: An anti-Jka was not detectable by the DiaMed-ID Micro Typing System but was strongly reactive when tested using other indirect antiglobulin test (IAT) methods. However, it was detectable in the DiaMed-ID system when the recommended diluent ID-Diluent 2, was replaced by other low ionic Strength saline (LISS) solutions. This led us to believe that the problem lay with the ID-Diluent 2. METHODS: The anti-Jka was investigated using various low ionic strength diluents in the IAT against both polyspecific and monospecific antiglobulin reagents. We tested the ID-Diluent 2 for its ability to inhibit complement activation, and bind calcium. RESULTS: The anti-Jka was shown to be a 'complement-only' binding antibody that reacted in all IATs performed except when tested with ID-Diluent 2. The ID-Diluent was shown to prevent haemolysis of ABO lytic antibodies, and further testing shows that it binds calcium. CONCLUSION: The use of a diluent which prevents haemolysis and binds calcium in an IAT system that contains anti-complement as well as anti-IgG must be questioned.[Abstract] [Full Text] [Related] [New Search]