I understand being anxious after getting tests results that surprise you. I had something in mine once when I went to Urgent care for a suspected UTI. I went crazy with worry. I didn’t have all the tests you had, but it tested for blood. I was convinced of the worst, but later I saw my primary and got another test and all was fine. I didn’t have kidney disease as I feared. (I have longtime type 1 diabetes .) I know that egfr can fluctuate. So, I’d discuss things with your doctor before getting too upset. It might not be what you think.