I am 67 yo male. Diabetic but low A1C. BP is good. No protein in urine. 6' 4" 165 lbs. I have had mild CKD last 4-5 years. As recently as 2017 eGFR was 60. Now last 6 tests (3 in 2018 and 3 in 2019) have been 44, 44, 38, 42, 36, 40. Nephrologist has no idea what is causing CKD. He says recent drop too big to be explained by diabetes alone.
I follow low salt diet and try to limit protein to 75 - 80 gm per day. I eliminated dark colas. might have 1 banana per week. How concerned should I be by this drop in eGFR in 2018 - 2019. Trying not to panic as others have mentioned.
What is opinion of this group?