The indicators that can reflect the renal function

1. Creatinine
Generally, creatinine level can reflect the damage degree of kidneys. But there are some other cases which can cause high creatinine, such as too much meat intake, large activities, or acute progressive and so on. Therefore, the sudden increase of creatinine can not refer to the actual renal function. We need to do tests of endogenous creatinine clearance rate and the glomerular filtration rate.
The indicators that can reflect the renal function
2. Urea nitrogen
It is the metabolism product of protein, similar to the creatinine. But its toxicity is larger than creatinine, and it plays a more important role in the later period, regarded as an important indicator of uremia.
3. Uric acid
The sensitivity of uric acid in the renal function test is higher than that of creatinine.
4. Cystatin C
It can only be filtrated by glomerular, reabsorbed by the tubules. And it will be resolved after the re-absorption. Therefore, cystatin C is the best signal for the damaged kidney function.

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