The lymphocytes, which play a central role in our immune system’s defense mechanism, produce antibodies. These antibodies have numerous important functions, as they help defend against various pathogens. However, sometimes these immunoglobulins can become abnormally elevated, leading to various medical conditions. During laboratory tests, the increased paraprotein level is often detected first, but it may happen that the blood sample is taken for another reason, and the pathological change is found as an incidental finding. Elevated antibodies are not only unnecessary but can also cause numerous complications. For example, they can increase blood viscosity, which raises the risk of vascular occlusion. Additionally, the underlying disease can generate various problems, making…