Hi Stan,
It's always good to see someone graphing their lab results!
Your kappa/lambda free light chain ratio is calculated exactly like it sounds like it's calculated: by taking your kappa free light chain result and dividing it by your lambda free light chain result. You can check that by taking a set of FLC results for one date and just doing the math. If it doesn't work out, something must be wrong
So, as you expected, it's really the low lambda FLC level that is putting the ratio out of range. Also, as the table points out that is in the thread Anna mentioned (great that you remembered that, Anna!), an elevated ratio in a situation like yours suggests that the ability of your bone marrow to produce blood cells is reduced (suppressed).
Are you currently taking any myeloma medications? Did you take any other treatments, for anything else, during the periods when your ratio was unusually elevated?
Your doctor is obviously correct that it's your kappa levels that you want to be the most concerned about. At the same time, you don't want to be in a situation where your bone marrow isn't in very good shape. Is anything going on with any of your other blood counts, like your red blood cell or white blood cell counts, that might suggest bone marrow issues?
I hope all of this helps a bit. All these different lab results certainly can be confusing!
