No, you should have both the tTG-IgA and total serum IgA tests to screen for celiac disease. As long as you produce IgA (total serum IgA confirms you do), tTG-IgA is 98% accurate in measuring elevated antibodies. If you’re IgA deficient, or if there is some other equivocating factor to potentially compromise the blood test,… Read more »
(Updated .)Keyword: iga
Is an IgA result of 39, where normal is 81-463, considered deficient and could it invalidate anti-IgA tests?
Any level of IgA above 20 mg/dl should make the tTG-IgA test valid, regardless of age.
(Updated .)What is the percentage of false positives for DGP-IgA?
DGP-IgA is less specific than DGP-IgG and should not be relied upon as a follow-up test for those with celiac disease.
(Updated .)What level is considered IgA deficient for someone being diagnosed with celiac disease?
IgA deficiency (as it pertains to a celiac diagnosis) is a value less than 20 mg/do.
(Updated .)Is there a link between IgA nephropathy and celiac disease?
Yes, there is a link between nephropathy and celiac disease.
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