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{{toplink
|backcolour = FFE4E1
|linkpage =Immunology - WikiBlood
|linktext =IMMUNOLOGY
|sublink1 =Immunological testing - WikiBlood
|subtext1 =IMMUNOLOGICAL TESTING
|pagetype =Blood
}}
==Introduction==
==Introduction==
The radioimmunoassay (RIA) is a sensitive technique used to detect the presence of antigen in a sample using radiolabelled antibodies. Developed in the 1960's, the RIA proved a powerful tool in antigen detection, although the procedure was soon overtaken by ELISA, which utilise enzymes rather than radioactive labels. RIAs are still used today however, to measure:
The radioimmunoassay (RIA) is a sensitive technique used to detect the presence of antigen in a sample using radiolabelled antibodies. Developed in the 1960's, the RIA proved a powerful tool in antigen detection, although the procedure was soon overtaken by ELISA, which utilise enzymes rather than radioactive labels. RIAs are still used today however, to measure: