Your two kidneys work more than you realise. The kidneys remove excess body water and waste products 24 hours a day. The excess body water and waste products are removed from your body in the urine.
Besides the “removal” or “cleaning” job, kidneys have several other very important functions:
The glomerular filtration rate (GFR) is a measurement of kidney function that can be estimated from a simple blood test which measures the creatinine and albumin levels in your blood as well as taking into consideration your age, race, gender and other factors. By means of the GFR your doctor can determine your stage of kidney disease and plan your treatment. The lower your GFR the higher is the risk of the progression of the disease. The risk of progression provides information about how likely it is that CKD will advance.
In addition to the GFR, the level of albuminuria may be important. Albuminuria means that you have an abnormal amount of protein in your urine, which may be an early sign of ongoing kidney disease and means that your kidneys are not filtering your blood well enough. Albuminuria can be detected using a simple urine dipstick test to see if protein can be found in your urine. The higher your level of albuminuria the higher is your risk of progression of CKD.