Had a test done in July and my gfr was 53.3 and my creatinine was 1.02. Doctor wanted me to retest in September and when that was done my gfr was the same and my creatinine was 1.03. I just turned 29 with no known kidney disease in my family. The doctor is sending me to a specialist next week to try and figure out what's going on. Said that at my age she was a little concerned about the numbers. I went back and looked at my tests from last year in February 2019, gfr was 61.9. I don't know what to do honestly. I'm in Japan (from America) so this is luckily something I can afford but the language barrier does cause some problems and I don't know what could be the outcome. Any advice or questions to ask the doctor would be super helpful.