Need help understanding the readings

Hi a few months of knowing I have MGUS and blood levels seem stable however, my recent phone appointment was a lovely lady but not a haematologist so she couldn't give me any understanding of my results, I was just read a series of results one of which was my Kappa result which was 45. 47 I asked what it should be she said 19 that's why we are checking your blood I thought this was high enough but then googling it I read that Kappa result should be between 3 and 19 ! I am worried why mine is so high and if there is anything that can be done to lower it