Abnormally low urine creatinine, and unable to calculate Albumin/Creatinine Ratio (urine albumin less than the lower limit)?

Hi there,

There is no reason to be concerned. Your urine may have simply been dilute at the time. This is a normal test.

Dr. Jordan Weinstein

Hi, Dr. Jordan:

Thank you so much for your quick reply.

Since you said my urine might be dilute at the time, so, in my situation, my serum test values reflect more accurate for my kidney function this time, is that right?
And, do I need to repeat the Urine Albumin/Creatinine Ratio test after a while, or require a 24 hours urine test? If needed, how soon would you like to suggest?

Thank you very much for your time again.

My info:
random urine Creatinine : 1.1 mmol/L (reference 2.5-20.0 mmol/L) ;
urine Albumin : <5 mg/L (undetectable);
urine Protein: negative;
serum Creatinine: 59 umol/L (reference 50-100 umol/L);
eGFR: 110;
I am 41 years old, female.


Sarah

The dilution will not impair the accuracy of the test and is why the albumin to creatinine ratio is so useful. And furthermore, no reason to suspect the blood test to be inaccurate. I generally would not suggest repeating normal tests

Dr. Jordan Weinstein

Thank you so much Dr. Jordan for your quick reply, and I am very happy to hear that all my results are normal.

Also, thank for this amazing website, it allows us to ask questions and receive prompt responses from real doctor. This is so useful and helpful!

Two thumbs up!!

I have exactly the same situation with readings of Albumin <5 mg/L and Creatinine LO at 1.4 mmol/L. My family physician advised that it's a good thing the albumin is low which shows things are working fine. If she felt a repeat test to be necessary, she would have said so.

This is a little different . Sorry if I'm in the wrong place. Yesterday I had a blood test. This morning I got the results from my online lab account.
eGFR was 82, and Creatinine was 64. I'm 75 yrs of age. The score range according to the lab for creatinine is 50-100 umol/L which is in the normal range and for eGFR 60-89, which says
"consistent with mildly decreased kidney function. However, in the absence of other evidence of kidney disease, eGFR values in this range do not fulfil the KD1GO criteria for chronic kidney disease" If there was an abnormal score in any test result, the lab would have it flagged in BOLD letters, but nothing was flagged in the results at all. I'm a little concerned here & would appreciate your advice. Thanks

Quoted from Guest on Thursday, 13 April 2023

This is a little different . Sorry if I'm in the wrong place. Yesterday I had a blood test. This morning I got the results from my online lab account.
eGFR was 82, and Creatinine was 64. I'm 75 yrs of age. The score range according to the lab for creatinine is 50-100 umol/L which is in the normal range and for eGFR 60-89, which says
"consistent with mildly decreased kidney function. However, in the absence of other evidence of kidney disease, eGFR values in this range do not fulfil the KD1GO criteria for chronic kidney disease" If there was an abnormal score in any test result, the lab would have it flagged in BOLD letters, but nothing was flagged in the results at all. I'm a little concerned here & would appreciate your advice. Thanks

Hello,

If you do not have structural kidney disease (e.g. polycystic kidney disease seen), abnormal protein in the urine or suspicion of a systemic disease, then this lab fining is of no concern, especially if the value remains stable in this range.

I can only base my opinion on the information provided and your health-care provider might arrive at different conclusions once you have provided an entire history and had a physical examination performed. As always, this forum provides general medical information only and is limited to educational use only. Please discuss the above remarks with your health-care provider.

Dr. Jordan Weinstein

Thanks so much for your response. I do not have polycystic kidney disease. Actually, I had exactly the same result last July as the 1st writer on this blog. I'm with the understanding that
eGFR can decline with age. As mentioned my eGFR score on Wed. was 82, and the creatinine was 64 which was well within the range. I haven't heard back from my Dr., so I'm assuming
everything is ok. I looked back into some of my blood work papers & over 2yrs ago, I had an eGFR score of 81, but last year the score was over 90 again.
I'm mildly concerned, but not worried. Yes, there is absence of evidence of kidney disease which likely diminishes the concern of the eGFR score.
Any comment to this? Thanks in advance!!!

Quoted from Guest on Friday, 14 April 2023

Thanks so much for your response. I do not have polycystic kidney disease. Actually, I had exactly the same result last July as the 1st writer on this blog. I'm with the understanding that
eGFR can decline with age. As mentioned my eGFR score on Wed. was 82, and the creatinine was 64 which was well within the range. I haven't heard back from my Dr., so I'm assuming
everything is ok. I looked back into some of my blood work papers & over 2yrs ago, I had an eGFR score of 81, but last year the score was over 90 again.
I'm mildly concerned, but not worried. Yes, there is absence of evidence of kidney disease which likely diminishes the concern of the eGFR score.
Any comment to this? Thanks in advance!!!

From the information provided, these are normal results.

Dr. Jordan Weinstein