Ig titers; are there standards?

lamb L.A.M.Buisman at cable.A2000.nl
Thu Jul 20 14:14:12 EST 2000

The state of infection is determined by testing at intervals, using the same
method of testing. A rising IgG titer is an indication for a current infection.


Russ wrote:

>         In the process of studying Chlamydophila pneumoniae, I have found
> that of IgA, IgG, and IgM titres used by various researchers to determine
> the state of infection varies greatly. IgG titers ranging from 16 to 512
> have been used by various researchers.
>         My guess is that different tests have different standards.The
> researchers probably decide to use higher or lower thresholds depending on
> what they are trying to learn.
>         Are there any standards for interpreting Ig levels? Any tables to
> convert results obtained with test Y to the corresponding results in test Z?
> Thanks for your attention.
> Russ Farris

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