Routine blood test showed GFR of 55

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En0u1209
Posts: 2
Joined: Thu Dec 31, 2020 2:27 pm

Routine blood test showed GFR of 55

Post by En0u1209 »

Hi, I had a routine blood test at my GP a few weeks ago and was asked to come back in a month to redo. When I checked the test results online it showed I had a creative level of 99 and GFR of 55.

I am due to have bloods taken next week to test again.

My main question is could this be a fluke low result? Or is it likely to be CKD? Is there anything else that can affect these results. I’ve tried googling but I can’t really find out whether results naturally fluctuate much. I know you have to have had a low GFR for 3 months to be diagnosed with CKD so I’m guessing this means may they may dip for a short period of time.

Ps I am a 37 year old female who does not have diabetes or hypertension.

Thanks in advance
wagolynn
Posts: 1310
Joined: Thu May 23, 2013 2:49 pm

Re: Routine blood test showed GFR of 55

Post by wagolynn »

Hi EnOu1209,

GFR is usually eGFR (e stands for estimated), and is well known for being inaccurate but an eGFR is OK, it may become a problem if you became pregnant.

With eGFR, it is best to look at trends in several blood tests rather than acting on a single reading.

It is possible for the blood results to change if you are 'out of sorts', as they say, so I would wait for the next set of results.

Best wishes and Happy New Year.
En0u1209
Posts: 2
Joined: Thu Dec 31, 2020 2:27 pm

Re: Routine blood test showed GFR of 55

Post by En0u1209 »

Just as an update my eGFR on my second set of bloods was still 55. I also looked back over my medical history and I had U&E tested in 2017 and it was 60. I guess that means 55 is unlikely to be a blip.

I have an appointment with my dr on Friday to discuss. I’m assuming I will need to have another blood test in a month as CKD can only be diagnosed if GFR is under 60 for 3 months+.
wagolynn
Posts: 1310
Joined: Thu May 23, 2013 2:49 pm

Re: Routine blood test showed GFR of 55

Post by wagolynn »

Best wishes.
Giordana
Posts: 1
Joined: Thu Mar 16, 2017 4:44 pm

Re: Routine blood test showed GFR of 55

Post by Giordana »

Hi there,
It could be a CKD, GFR is just an estimate blood result. I think you should also do a urine test to find out if there is protein (protenuria) or blood (hematuria) in your urine.

I also found out about my low egfr (49) and protein in my urine during a health routine check in 2016, when I was 38 years old (female). My GP thought I had CKD stage 3 and referred me to a nephrologist straight away.
After many tests (renal ultrasound, MRA and biopsy) I was diagnosed with CKD stage 3 Iga Nephropathy.

Looking back at my blood test result in 2014 my eGFR was 68 (age 36). My GP never mentioned it to me. I wish she did!
Now in 2021, I am still in CKD stage 3 with healthy diet, exercises and good blood pressure control (Lisinopril 5mg).

I wish you all the best!

IgAN patient
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