@barbarian1 and @cousinvinney, elevated ImmunoGlobulinM antibodies indicate infection, inflammation, and/or various blood disorders (normal is around 40-250). M spike is different than IGM; it is a measure of monoclonal antibodies in the blood. As in the case of an M spike (0.1 to 0.4 g/dL is detection limit so if yours is 0.056 g/dl it is OK) results need to be evaluated by the oncologist because individual numbers can have multiple causes. https://my.clevelandclinic.org/health/body/igm This link is for MM, but it does explain various blood and other test results and normal ranges: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://themmrf.org/wp-content/uploads/2023/07/Learn-Your-Labs_patient-toolkit.pdf

@barbarian1
I copied all my blood work results into the Claude app for clarification and to help with my questions for my oncologist. It's tedious but also interactive, and while I'm not advocating for it to supercede doctors, it has has been spot on so far. I find it a good tool which paired with this forum can be reassuring.