Hi all, I was just made aware by my primary care physician that I have stage 3A CKD. I am 58 years old caucasian male. I am scheduled to see a nephrologist. As I keep my blood test results from previous years, I calculated my GFR level over the past two decades based on my age and creatinine levels. It seems I have been at stage 3A for all that time (GFR has fluctuated between 60 and 44). I am currently at 47. The fluctuations make no sense to me as at age 41 I was at 51, yet at 45 and 46 year old I was at 60. Is this fluctuation normal? Thanks.