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Iga Deficiency
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What exactly is IGA deficiency? Does that mean your levels are low, or that you don't have any? What causes this? I have heard this mentioned a lot.

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IgA deficiency results in your levels being lower than the actually would be. This is important because while a low IgA might make you think a test to be negative for celiac, if you have IgA deficiency, then that might be what keeps it in the normal range--and in fact, you might actually HAVE celiac.

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Would Iga deficiency give false low readings for the other tests?(Igg,tTg orEma?)

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No...just the IgA. But an elevated IgA is also relatively common, which is why the IgA alone cannot diagnose...you also need the IgG and the EMA

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Yep you need the full panel with the IgG , tTG, EMA, and IgA...IgA deficiency would not effect all of them.

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