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.
A blood sample is sent to laboratory. Serum creatinine will be factored with age, race, height and weight to calculate your glomerular filtration rate (GFR). Normal range of glomerular filtration rate (GFR) will decrease with age increasing.The result of GFR will confirm how much the kidneys have been damaged and the stage of chronic kidney disease. The normal range of GFR is above 90ml/min.A GFR result of 60 to 90ml/min is an abnormal condition, indicating stage 2 chronic kidney disease; but the diagnosis should be made on the basis that the patient has any of the following evidence of kidney disease:he normal range of GFR is above 90ml/min. A GFR result of 60 to 90ml/min is an abnormal condition, indicating stage 2 chronic kidney disease; but the diagnosis should be made on the basis that the patient has any of the following evidence of kidney disease: