@alexmimi2023 Welcome to Mayo Clinic Connect!

I guess I need a few more details, to respond to you. How long ago was the eGFR of 42? Have your doctors been tracking this decline in function? Your age and any other health conditions? Has there been a repeat of the testing, and what did it show?

We may have a decline in function due to age, illness, dehydration, medication side effects. Do you think any of those play into this?
Ginger