The normal serum creatinine is? How should lower creatinine?

Many kidney disease patients know that their creatinine high is bad, but they don't know how to lower creatinine, with what method lower creatinine effect is good, look together today, and I hope to kidney disease patients will help.
And serum creatinine, in early renal impairment, blood urea nitrogen can be in the normal range. When glomerular filtration rate lowered to 50% of normal the following, the concentration of the blood urea nitrogen to rise. Normally, blood urea nitrogen and the serum creatinine than (BUN/Scr) value is around 10, a high protein diet, high decomposition, water, metabolic state renal ischemia, blood capacity lack and some acute glomerulonephritis, all can make ratio increased, even up to 20 to 30; And low protein diet, liver disease often makes the ratio lower, at this point, called low nitrogen qualitative hematic disease.
For serum creatinine, blood urea nitrogen increases. Immune blocking clear regulation therapy of the inherent kidney damage repair cells, realize the kidney disease to "this" and avoid illness relapse again and again. Traditional Chinese medicine active substances can activate the kidney inherent cell function, reverse and back to normal cell's metabolism; Improve the damaged kidney microcirculation, provide for kidney aerobic repair environment, accelerate the kidney cells repair damage inherent; Improve the damaged kidney in environment, reduces poisoning symptoms, for kidney repair and rebuild the creation loose environment; Has the dual phase immune adjustment function and metabolic function, and can control the illness progress, thus for kidney damage the cells of the inherent repair and the reconstruction lays good foundation; Can repair damaged kidneys and rebuilding nutrient, accelerate the cells of the kidney damage inherent repair process.