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eGFR 59, waiting for second blood test, what can affect this?

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jayne_47055
jayne_47055

Hi, I am new on here, but wondered if anyone could help with a worry I have? I had a blood test result eGFR of 59 two and a half months ago, and have a second test in two weeks time. My first test was a fasting one, so I wondered if people generally found non fasting tests to show a higher or lower eGFR? My test is at 9.45am, so only talking about a cereal breakfast and a cup of tea, but wondered what other peoples experiences were? Thanks!

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  • jane15780
    jane15780 jayne_47055

    Posted

    Hi Jayne

    I have been doing some research on this, and your doctor was being careful doing a fasting test as recommended by latest research, which shows that eating red meat or anything else with high creatine levels (also tuna,salmon) will affect results as the creatine turns into creatinine in the body (increases this) and this is what is used to calculate eGFR (decreases this). Some people have been diagnosed with say, stage 3b CKD when they were only stage 3a just because they ate meat before the blood test.

    All the best.

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