Erbium is a chemical element in the lanthanide series, with symbol Er and atomic number 68.A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements on Earth.rbium is a chemical element in the lanthanide series, with symbol Er and atomic number 68.
Many factors may result in elevated creatinine and BUN numbers, but we will only talk about those numbers caused by kidney damage here. So you should make sure you have already been diagnosed with kidney diseases. The normal range of creatinine level for men is 0.6-1.2mg/dl; for women is 0.5-1.1mg/dl. The normal range of BUN numbers for adults is 9-20mg/dl.
A creatinine clearance test is usually ordered if the serum creatinine level is higher than normal or when a person is starting dialysis. Normal creatinine clearance for men is between 97 to 137 milliliters per minute, and women have a normal clearance of 88 to 128 milliliters per minute.