Whenever bloods are done for my MGUS it includes a figure for eGFR with is essentially a percentage figure for the efficiency of your kidneys. It is only an estimate and I believe that it can vary more than most figures, but it’s a good general guide as to how the kidneys are working.
I lost a kidney to kidney cancer and my result is usually about 60 (which means that it is 60% efficient compared with perfection with two kidneys) and that’s actually very good and would beat some people with two kidneys.
I believe that you could get a variation of – 10 without creating alarm, but it would be something to keep an eye on under those circumstances. Dialysis only comes into the equation between 10 and 20 and they’d be keen to take action before you reached that level and there are set criteria as to when they should intervene as there are things they can do.
I’m usually fastidious in wanting results (only 4 figures including eGFR) but I didn’t get that one last time and ironically my GP mentioned it had dropped in passing but, it’s been steady for so long, I didn’t bother to ask. I’ll be getting it this month’s reading soon anyway.
When I ask for results I get that alarmed ‘you’re a paranoid hypochondriac look’ from haematology, but actually I’d rather know and I’m less of a bother when I do.
Of course it could be a completely different issue and my immune system has always been a little quirky, but nothing like a kidney infection, I’m happy to say.