Should I see an oncologist for possible Multiple Myeloma?

Hi there. In general, I agree with the way you are pursuing this and monitoring your situation given your strong family history for this type of disease. However, the finding of faint IgG kappa band, at the present, is not diagnostic of multiple myeloma, or of any disease entity for that matter. These proteins in our blood are affected by a lot of factors including acute illnesses such as infections (bacterial or viral), traumas, and even general stress and increased anxiety (that's why some proteins are called 'acute phase reactants' that they respond to acute stresses in the body). This may be one explanation for the appearance and disappearance of some of these proteins. The diagnosis of MM is dependent on a set of criteria which would include bone lesions, serum immunoglobulin levels, and the presence of bone marrow plasma cell infiltration, and I think you are at the present, far from fulfilling any of these. (I have attached the diagnostic criteria and other information about MM along with this post) Furthermore, if your present blood oounts show normal results and do not suffer from skeletal symptoms such as bone pains, then it may be unlikely that a further hematologist consult can be fruitful. I would suggest that you continue to follow up with your primary doctor to have this monitored, and also watch out for symptoms such as pallor, easy fatigability, and bone pains. Regards and God bless.