Ask the Experts

  1. David
  2. General Nephrology Questions
  3. Thursday, 21 November 2019
  4.  Subscribe via email
Hi everyone, I hope someone can provide some insight here...

I'm a 45 year old male (non-black), i've been tracking my creatinine values the last few years as they were quite high, i;ve seen a broad range from 84 recently to a high of 132. A range of 47 ml/min seems pretty crazy, can we really have that much fluctuation in GFR? Could dehydration cause such a gap? Could differences be attributed to different labs? Optimistically i am hoping the lower creatinine is valid since if my kidney was actually damaged it would not regain functionality.

There was a extended period this summer values were not great (128,132) could this be due to something particular like a kidney infection or some temporary situation?

Recent urine tests revealed no protein. I don't have diabetes or HBP.

Anyhow some opinion on what is happening here would be great, if there cause for concern and what to do moving forwards.


thanks!

* GFR calculated using ckd-epi equation (review on web says it is more accurate)

84 (GFR 112)
November 6, 2019
103 (GFR 87)
October 16, 2019
106
September 24, 2019
128
July 4, 2019
132 (GFR 65)
June 12, 2019
109
June 10, 2019
121
April 21, 2019
104
March 4, 2019
113
February 9, 2018
105 (GFR 106)
January 15, 2018
121
December 13, 2017
126 (GFR 70)
November 1, 2017
96
July 24, 2017
116
May 19, 2017
108
September 21, 2016
117 (GFR 77)
July 20, 2016
Responses (2)
Accepted Answer Pending Moderation
Hello -

1. What sort of urine test was this? A ‘dipstick’? Or a 24-hr urine collection/creatinine clearance?

2. Do you always measure your Creatinine in the same lab? Do you always measure it whilst fasted with some water before the test?

3. Do you follow a high protein diet or have a lot of muscle mass?

Thanks
Accepted Answer Pending Moderation
Hi,

1. it was not a urine test, these were blood tests.
2. These were not all measured in the same lab, most were in the same one but the last one of 84 was in a different lab. Most were fasted, but the last 3 were not (interesting the creatinine was relatively lower then). I try to be hydrated before but it has not always been the case. Could fasting affect creatinine values?
3. I'm not on any special diet nor have alot of muscle mass.

I'm mainly trying to see if there is cause for concern here, ie is my GFR actually in the 60's or like the latest values show, relatively normal? I know with higher GFR there is a problem with accuracy and the idea is to look at the overall pattern over time but given my values i'm not seeing any really.

thank you!
  • Page :
  • 1


There are no replies made for this post yet.
Be one of the first to reply to this post!
Guest
Submit Your Response
Upload files or images for this discussion by clicking on the upload button below. Supports gif,jpg,png,zip,rar,pdf,jpeg,doc,docx,xls,xlsx
• Insert • Remove Upload Files (Maximum File Size: 10 MB) - NB: PLEASE REMOVE ALL IDENTIFYING DATA
ukidneyisup