I am a 47 year-old white male, non-smoker since 1997, occasional drinker, BP controlled w/5Mg lisinopril and no diabetes. On January 31, 2017 I had a checkup. My bloodwork revealed a 2.3 Creatinine level with a 36 BUN and microscopic hematuria. I was on a higher protein diet for the 30 days previous to this test. I returned a week later (after moderating my protein intake) for a retest and my numbers had dropped to 1.8 creatinine and 26 BUN. A subsequent test yesterday revealed a Creatinine level of 1.7 and Bun of 38. Dry CT (no contrast since my GFR was 43) of abdomen and pelvis revealed a thickened bladder. Having a cystoscopy in the near future. Is there hope to be found in the fact that my creatinine levels keep declining? If I have an underlying bladder obstruction/issue that is resolvable, is it possible that my kidney function could improve? Or are they simply damaged to the point they are now and I need to nurse them through the rest of my life? UPDATE: Cystoscopy checked out normal, Renal Ultrasound checked out normal, but cytology showed atypical cells in urine. Provided a “1st morning” urine sample today for additional testing. Question: If my kidneys are checking out as normal on these tests and my urinary tract appears clear, why is my GFR so challenged? Nephrologist appointment on 3/20, but I am itching for answers.

I am unable to provide a specific diagnosis based on the information that you provide.  The blockage that may have been present could have caused kidney injury that can take some time to resolve.  I suggest that you wait for your appointment with a nephrologist.  The recovery of your kidney function may take some time.

 

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