Skip to content

    Announcements

    Exciting News for WebMD Members!

    We've been busy behind the scenes building new message boards for you. You'll have new and easier ways to find messages, connect with others, and share your stories.

    And, this will all be available on your smartphone or other mobile device!

    What Do You Need to Do?

    The message board you're used to will be closing in the coming weeks. While many of your boards will be making the move to our new home, your posts will not. Want to keep a discussion going? Save posts you want to continue (this includes your member profile story), so that you can re-post them in the new message boards.

    Keep an eye here and on your email inbox, we'll be back in touch soon to give you all the information you need!


    Yours in health,
    WebMD Message Boards Management

    Have you had a kidney transplant or are waiting for one? Then visit the Organ Transplant Community and the Diabetes and Kidney Community to share your experiences with other community members!

    Are you newly diagnosed? Use the WebMD search engine to read articles like Understanding Kidney Disease.
    Lab Results and GFR Calculations
    avatar
    KristieH posted:
    I have concerns about my labs. I follow them very closely and keep a spreadsheet of everything. My GFR is declining again and my creatinine is up and down as well. There is a test my doctor ordered that I have never seen before. Pro+Creatu (random). I have seen it separated but not under this grouping. My numbers are off the chart. Has anyone seen this? Should I be concerned? Also, in determining GFR, would the lab be more accurate or the calculation you do online through a site like the National Kidney Foundation? The reason I ask is the lab states my GFR is 36, but the calculations show 32, which is much more dangerous.

    My question is two part. How accurate are the labs in determining GFR? I did several online ones and my GFR was 32, but my lab is saying 36. Also, my doctor ordered a different test than usual and I am concerned about the outcome, should I be?

    Renal Panel
    Creatinine Serum 1.70mg/dL
    BUN 41mg/dL

    Prot+Creatu (Random) Reference Range
    Creatinine, Urine 48.6 15-.0-278.0 mg/dL
    Protein, Total, Urine 105.9 0.0-15.0 mg/dL
    Protein/Creat Raio 2179 0-200 mg/gcreat
    Reply
     
    avatar
    john-skpt responded:
    Remember that almost all of these numbers are eGFR, the e being ESTIMATED. Those are never all that accurate. There are specific tests for GFR that are more accurate, but they are a lot more time-consuming and expensive to do, so very few docs bother with them these days.

    There are different 'models' that the calculators use for figuring eGFR, most use the Cockroft-Gault model, some use the newer--but not really more accurate--CKD-EPI, or the Mayo Clinic model. There are a lot of options.

    About the other test, I suspect that you refer to Protein:Creatinine Ratio testing. Again this is a quicl mathematical estimate, but over the years it has been shown to be relatively consistent across a wide number of patients. It does not come out with a result that can be directly compared to eGFR since it is expressed without units of measure rather than ml/min/1.72 m squared.

    But without going to the trouble and expense of doing a real iothalamate-125 radionuclide test, it may be the best that you can get.
     
    avatar
    KristieH replied to john-skpt's response:
    Thank you I feel better about it now


    Spotlight: Member Stories

    My husband had an ultrasound in 2009, at the VA, that showed mulitple cysts and hydronephrosis in left kidney. Abnormal follow up was requested, but n...More

    Helpful Tips

    I have a uti and severe kidney pain, Is this common?
    I have a uti and such bad kidney pain that I can hardly move, I cant bend down and it hurts more than I can explain. the pain comes and ... More
    Was this Helpful?
    0 of 0 found this helpful

    Report Problems With Your Medications to the FDA

    FDAYou are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.