IgM high - any experiences with it?

one girl from the Polish uc forum has asked me to put this thread, she is curious if any of you has ever had very high IgM. She received her blood test results today and everything is ok except this IgM which is 480. IgG is ok. She is presently in remission but recently got out of a prolonged flare. No symptoms of boreliosis or the like. She says she's feeling very well.

Thanks Quincy I passed it on to her but I made a mistake in the numbers. Her result is 8,41 and the norm is 2,30 so it is three times above the norm so she's wondering if this is the reason to start worrying. Surely she will have to repeat the test soon

she has just posted that a doctor pathologist told her it's nothing to worry about because everything else is ok and the lymph nodes not swollen, it's the antibodies' 'remembrance of things past', that is of recent flare.
so fortunately they didn't scare her more because she is an extreme hypochondriac like me