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Doctor insights on: Gfr Test How Does It Work

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Gfr >60 and bad ANA test, what does it mean?

Gfr >60 and bad ANA test, what does it mean?

Unclear: The GFR OF greater than 60 indicates normal kidney function. A high title ANA can be indicative of many different diseases .it is best to see a rheumatologist who can interpret the meaning of the ANA and investigate possible disease connections ...Read more

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My blood work said my GFR is 129 is this bad..

My blood work said my GFR is 129 is this bad..

Normal 90-120: A GFR of 129 is no problem. We are concerned that a rate below 90 could indicate sluggish kidney function and a rate below 60 means chronic kidney trouble while a rate below 15 means very serious problems. Your kidney function appears to be very good. ...Read more

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Please explain what a high level of GFR is in a blood test. ?

Please explain what a high level of GFR is in a blood test.  ?

Ignore it: The "gfr" given on lab sheets these days is a subscientific estimate of the rate at which water passes from blood into the the filtrate that will become urine. For a healthy person, the "gfr estimate" is not helpful. It ignores variability in body musculature, how much protein you have eaten recently, and other factors. ...Read more

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I took a GFR test i see its reads 60 ml/min/1.73 m2 is that serious?

I took a GFR test i see its reads 60 ml/min/1.73  m2 is that serious?

Not if older person: Thr GFR normally declines with age. If you are 70 years or older your GFR may normally be at 70 or so. What matters more is what are other tests show e.g. Urinalysis, ultrasound, and other chemistry. ...Read more

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What comparison or correlation can be made between the creatinine clearance test and GFR?

What comparison or correlation can be made between the creatinine clearance test and GFR?

Estimate: The true creatinine clearance test, which requires a timed urine, is much more accurate as a measure of glomerular filtration rate than is the crude and subscientific estimate obtained from just a spot serum creatinine. ...Read more

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Should i be worried that i consistently test in low 80s on GFR blood test? Is there anything I should do?

Should i be worried that i consistently test in low 80s on GFR blood test?  Is there anything I should do?

See a Nephrologist: It is important to check if there is any significant proteinuria and/or hematuria; also to note any risk factors for chronic kidney disease like hypertension, diabetes, chronic nsaids use or others. Probably best to see a nephrologist. ...Read more

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On my lab work it says GFR NONAFR is 111 and GFR AFRICAN is 134. Is this normal? I didn't know what this meant.

On my lab work it says GFR NONAFR is 111 and GFR AFRICAN is 134. Is this normal? I didn't know what this meant.

Subscientific: Using a spot creatinine to estimate glomerular filtration rate is subscientific but it's something that our weird medicolegal environment forces labs to do, using a formula that was intended for populations rather than individuals. The number is estimated using different formulas "because black people are more muscular than white people." Creatinine's produced by muscle. Be glad for good health. ...Read more

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Why does GFR test ask about african-american? What's optimal gfr? Are age, gender, and race taken into account? Why?

Why does GFR test ask about african-american? What's optimal gfr? Are age, gender, and race taken into account?  Why?

It's the muscle mass: The muscle mass is more in african americans vs others, men vs women, young vs old. When muscle mass is high, creatinine will be expected to be high without actual kidney weakness (overestimates kidney weakness). Accordingly, we need to factor these elements in the equation to estimate kidney function (gfr). ...Read more

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I had my yearly physical yesterday and i received my blood work results today and my GFR is 72.29 should I be worried?

I had my yearly physical yesterday and i received my blood work results today and my GFR is 72.29 should I be worried?

Consult your doctor: Your GFR is slightly below the normal. You should see your doctor to determine the cause and discuss measures to keep if from getting worse. ...Read more