I had similar over the winter months when I was ill with something else, I think they waited 2 weeks between tests. Mine eventually came back down to where I usually sit, can’t recall my numbers but I’ve had slightly leaky kidneys but very stable for the last 14 years, I’m slightly elevated but nowhere near kidney failure, my DSN & GP are not concerned at all.
I am on a low dose of blood pressure tablets which I’m on to further protect my kidneys, I’ve never had high blood pressure