You should expect about 3 to five years (possibly 7 years) of use from the composite and as many as 20 years or longer from an amalgam restoration. Actually a well-cared-for amalgam filling can last a lifetime, so the expensiveness of the filling really becomes a minor consideration.
This shows how well the kidneys are performing. In a normal healthy person the GFR stays close to the same value all of the time. The test is done by taking blood from a person and sending it to a laboratory. Normal values are between 90ml/min and 110ml/min.
The normal value for GFR is 130-140 ml /min of creatinine(a substance used to check kidney functioning) glomerular filteration rate, this test is done to check the kidney function. GFR stands for glomerular flow rate.It provides an index for the function of the kidneys.he normal value for GFR is 130-140 ml /min of creatinine(a substance used to check kidney functioning) glomerular filteration rate, this test is done to check the kidney function. GFR stands for glomerular flow rate.