I do not know if this is helpful but may be important to know. Others have provided the not so recent article or articles authored by some Mayo experts that describe the conditions associated with MGUS and those which are not. Conditions, of course, have symptoms.
I have had MGUS for at least 23 years - Mayo diagnosed it in 2002 based on a total protein value that was ONE decimal point low 6.6 versus 6.7. The tech saw that and went further. If I did not go to Mayo, this may never have been found.
Anyway, i have recently read articles, one authored by Dr Rajukar that an HDL in a MGUS patient could be suppressed. Similarly insulin values can be suppressed also.
I am pleased that our disease is finally getting attention. As another patient wrote: Knowledge is power!