Hello

I think this can be done according to the following;

1- using serial dilution of the concentration IgG

2- doing HIA and measure the titres for each dilution

3- then correlate between the two; the dilution and titre.

regards.

hemagglutination inhibition has long be used for the determination of acquired immunity following infection by measles virus or rubella virus

For parvovirus, I do not know because now, ELISA kits detecting specifically either IgG or IgM antibodies are used. In principle, there must be a relative correspondence between tests

Thanks for your responses.  I sent samples to a commercial laboratory and only received results back (HIA titres) so unfortunately I don't have the capacity to do serial dilutions. Hence the question to see if there is value/statistic to correlate the two diagnostic tests.

Perhaps these articles will help you to solve your very specific problem.

Remember that a hemagglutination inhibition test informs you about the existence of exposure to the virus but does not give you any indication of how recently or active is this infection  

Article Accuracy of a point-of-care ELISA test kit for predicting th...

Article Serological Survey for Canine Parvovirus Type 2a (CPV2a) in ...