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Antibody titerAn antibody titer is a measurement of how much antibody an organism has produced that recognizes a particular epitope, expressed as the greatest dilution ratio that still gives a positive result. ELISA is a common means of determining antibody titers. Additional recommended knowledgeFor example, the indirect Coombs test detects the presence of anti-Rh antibodies in a pregnant woman's blood serum. A patient might be reported to have an "indirect Coombs titer" of 1:16. This means that the patient's serum gives a positive indirect Coombs test at any dilution down to 1:16 (1 part serum to 16 parts water). At greater dilutions the indirect Coombs test is negative. If a few weeks later the same patient had an indirect Coombs titer of 1:32, this would mean that she was making more anti-Rh antibody, since it took a greater dilution to abolish the positive test. |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Antibody_titer". A list of authors is available in Wikipedia. |