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What is the normal titre of the NIBSC antigen reagents?

April 26, 2017antigen normal reagents titre

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What is the normal titre of the NIBSC antigen reagents?

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The antigen reagents are calibrated in terms of haemagglutinin antigen content. Their content is usually in the range 30-60 micrograms haemagglutinin activity. The antigens are not assayed for haemagglutinating activity. The antiserum reagents are assessed by SRD activity and not by haemagglutination-inhibition (HI) assay, but they are expected to have HI titres >1:5000.