I posted a question yesterday and said many of my test results were normal then. But now I've started thinking and thinking about what might have actually caused it!
Before my last blood test, I had started a diet (low potassium, low calcium, low protein, low everything! I actually ate less). I started it around a week before the test.
Two days ago when I received my lab results, almost everything was normal.
I was wondering if the diet I started a few days before the tests might have affected the test results and whether it can mislead my doctor in her diagnosis?
How long does it usually take for a diet to kick in and change the lab results?
Thank you
Written by
Sharam
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I would be looking at the reverse. What caused the poor results in the first place, particularly as your have had a normal result. Your results are a snapshot of that particular time in your life. What you do or consume can influence results from the same day. Focus on an average over some months to get a better picture of your kidney function. It is also not impossible to get an incorrect result, mistakes can happen.I get tested every 3 months and always at the same period of the day, so that my body is hopefully at the same state each time. From the result I got, my diet was modified until I have managed an almost stable result. There is a slow decline still but for the most part it is linear now. Now my diet remains constant and I try to forget about CKD and get on with living.
Well, that totally makes sense! Actually it all started when I went to visit my doctor because I had morning middle back pain! I thought it was just a backache, and had no idea. He then ordered several blood tests, and it turned out that there was something wrong with my kidney function according to the results. So, I visited a nephrologist to see what her diagnosis is... Have to wait a few more days cause she's not in town.
I believe your test results prove you should stick with your dietary plan to help yourkidneys. I have the good test results with my watching my protein intake and sodium etc. I believe it means your kidney was able to flush more out of your system.
Hi Sharam, Yes, a diet a few days can effect your results. I just spoke to my nephrologist and he said that it is true. Unfortunately I ate very bad before my blood work as it was christmas and I made a big ham. I know I was not supposed to eat ham but I feel that I have to treat myself once in a while. This had a bad effect on my eGFR and next time I will eat so healthy and drink enough water before the test. Does anyone else here have an every day struggle not eating what you are not supposed to eat??
That's true. Though I did just the opposite and didn't have meat and high-potassium foods for a week before the test. So, I thought to myself maybe that's why almost my lab results are normal. I don't want it to cause misdiagnosis!
We don't know what diagnosis you received. It would make sense if you're limiting protein, that your protein numbers would show low numbers, etc. The kidney diet should only be followed by those told to do so by physicians and if those physicians monitor the results through frequent blood draws. I'm a healthy lady who went on the "renal diet" to be supportive to my husband (now on dialysis). The outcome for me was severe as my body needed the sodium and chloride I removed - hence, my blood pressure plummeted, my heart nearly stopped, and I was almost hospitalized. Lack of protein slows metabolism, produces anemia, and more. This diet plays havoc with numbers in various areas. Be wise, be careful. Do nothing on your own unless advised to do so by a professional.
Actually, I haven't received any diagnosis yet. I went to a nephrologist with my lab results and as she said my creatinine was high (1.26), my blood urea was on borderline (44) and there was blood in my urine. So she ordered a lot more tests. But this time there is no blood in urine, my urea is 29, and almost everything else is normal (potassium, calcium, sodium, ...)
I was wondering if it was because of the diet I started a week before (no meat, and low-potassium foods) the test and thought maybe these results can mislead my nephrologist and cause misdiagnoses.
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