How low was low?: Selective IgM deficiency is a very rare condition, and the mere fact that you are fine means that you have an intact immune system despite the possibility of low IgM. That was a single reading, could have been affected by a disease you had then or a medication you were on, readings differ with age, many normal people have 2SD readings less than normal range.If you're otherwise healthy don't bother
Answered 11/28/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
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