Creatinine (a byproduct of protein break down and kidney's are involved) however it is not related to creatine use (at least in the general population of users who have no prior kidney problems). There are few things I've learned about this since my daughter contracted E Coli and had kidney damage, because I researched all things creatinine during that.
For the general healthy exercising population, creatinine will fluctuate a bit, this is normal, unless you have an extremely high marker for it then there is really nothing to worry about. A few things can contribute to higher levels on otherwise normal check ups, such as not drinking enough water, recent bouts of endurance activity, strenuous exercise and not eating enough (muscle wasting going on in the body, your muscle is also protein and when you lose weight quickly, or lots of it being muscle, the kidney's still have to process those byproducts). So a few different things contribute to it fluctuating. Unless you start to get extreme water retention issues, abdominal bloat that doesn't seem to be food related, urinary tract problems and it doesn't elevate any further, you're fine (doctor will say the same thing and keep an eye on it). A few things you can do to help with kidney health is eat more cabbage, cauliflower, spinach, ginger, asparagus, garlic, onion, berries, apples, more fish, less red meat. Also drink more water, cut back on caffeine/alcohol further if you partake and make note of how much potassium/phosphorus rich foods are are eating as well. Hopefully your doctor will have more answers for you though!
Edited by: SOOBIES at: 4/11/2013 (13:36)
Say no to the "Yo Yo"