Ig titers; are there standards?

Russ tryggvi at email.msn.com
Thu Jul 20 11:34:29 EST 2000

        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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