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View Full Version : Low AGFR while taking creatine.



rufunky
05-20-2014, 06:57 PM
I would like some knowledgeable people to help me out with this. I'm not one to go to the Dr. but as you get older I think it is important to get yearly checkups so this is what I decided to started doing last year.

The Dr did a series of blood test including a kidney function test AGFR (Glomerular filtration rate )after the first blood test showed high levels of creatinine.The norm for my age and gender is 60+

1rst GFR
03/13/13 was 55.4

2nd GFR
08/12/13 was 47.7

3rd GFR (being off creatine directly after the previous test)
09/09/13 was 59.7

After I told my DR numerous times that I take a 5g creatine supplement daily she insisted that it didn't effect the results and that the creatine was damaging my kidneys. I am not one to take someones answer just because they have a degree if it doesn't make 100% sense to me. I also know you have to be careful what you read on the internet but I came across this link while researching which states exactly what I was explaining to my Dr:

"An eGFR may not be as useful for those who differ from normal creatinine concentrations. This may include people who have significantly more muscle (such as a body builder) or less muscle (such as a muscle-wasting disease) than the norm, those who are extremely obese, malnourished, follow a strict vegetarian diet, ingest little protein, or who take creatine dietary supplements."


Has anyone else encountered this with thier Dr? If anyone with more knowledge on how these tests are done can jump in that would be great. I really would love to get back on Creatine but not at the risk of damaging my body!

alkell
05-22-2014, 06:44 AM
I had the same, just a step above the really bad kidney function zone, creatine was not even discussed with or by my doctor. I have cut back on my creatine intake, unsure if I should give it up all together

rufunky
05-22-2014, 08:52 AM
I had the same, just a step above the really bad kidney function zone, creatine was not even discussed with or by my doctor. I have cut back on my creatine intake, unsure if I should give it up all together

How many grams do you take a day? I was taking 5 and from what I read even though 5 is the "recommended" daily most people only need around 2.5 to keep the creatine stores full. ( I actually found a calculation chart if your interested I can post it when I get home) My guess from the information I've gathered is that anything not used by the body spills over and is filtered through your kidneys. Maybe someone can step in here and either verify or correct me on this. I just don't get how 3mg more of creatine a day than natural intake could damage a otherwise healthy kidney.

GreenWave1
05-22-2014, 09:12 AM
I have had elevated creatinine levels for the last several years. Creatinine is produced by the breakdown of muscle. This is normal in people who lift. I told my doctor this. This past year, my doctor had me go to a nephrologist (kidney doctor). They did blood and urine tests (including a 24 hour test where I collected for 24 hours) and an ultrasound. After my deductable and out of pocket, I spent over 300 dollars so the nephrologist could tell me it's because I lift weights. My kidneys are perfectly healthy. They labeled me a creatinine producer.

We talked about supps and he said that my protein and creatine intake had nothing to do with it. In fact, he told me to continue doing exactly what I was doing leading up to the tests (supplementing and lifting) and told me after the fact that I could continue as before.

If you are really concerned (and/or have decent insurance) then see a nephrologist.

rufunky
05-22-2014, 02:08 PM
I have had elevated creatinine levels for the last several years. Creatinine is produced by the breakdown of muscle. This is normal in people who lift. I told my doctor this. This past year, my doctor had me go to a nephrologist (kidney doctor). They did blood and urine tests (including a 24 hour test where I collected for 24 hours) and an ultrasound. After my deductable and out of pocket, I spent over 300 dollars so the nephrologist could tell me it's because I lift weights. My kidneys are perfectly healthy. They labeled me a creatinine producer.

We talked about supps and he said that my protein and creatine intake had nothing to do with it. In fact, he told me to continue doing exactly what I was doing leading up to the tests (supplementing and lifting) and told me after the fact that I could continue as before.

If you are really concerned (and/or have decent insurance) then see a nephrologist.

Thanks for the reply. My Dr also wanted to send me to a kidney specialist but I suggested I go off the creatine for a month to see if my GFR went up and she agreed. As you can see from the last results that I mentioned above, it did indeed go up although it seems a bit low to me considering I have always been very health conscious. I believe my Blood Urea Nitrogen (BUN) level was slightly high also (not sure the number, I have the paper work at home). I do have good insurance so maybe I should go see a specialist.

I am still interested in other peoples experiences with these tests as it seems it's a common situation among bodybuilders/ supplement takers.

alkell
05-22-2014, 08:46 PM
I was taking 5 grams in the morning then 5 grams after lifting, and I think my workout drink that I was drinking during workouts had some creatine too. I've cut back to 5 grams a day on training days only.