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    Includes Expert Content
    ANA question for Dr. V.
    lisaisweavebee posted:
    Whenever I have been tested for ANA my results always come back as 4.6 or 2.3 kind of a result and I notice others here will say their results are in a ratio format( i.e. 1: 320).

    Is one method of ANA more reliable than another? Why the different methods?


    lisaisweavebee responded:
    And what does a patient believe when one blood sample is tested both ways and is positive by EIA but negative by IFA?

    Thanks for any insight!!

    R Swamy Venuturupalli, MD, FACR replied to lisaisweavebee's response:
    Lisa, this is a good question. In general the ana test is most accurate when done by immunofluorescence ( IF). Recently, i posted about this issue. Please see the link below.
    lisaisweavebee replied to R Swamy Venuturupalli, MD, FACR's response:
    Thank you!!


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