Grays Peak and Torreys Peak - 8.35 Miles Round-Trip. Grays Peak (14,270') and Torreys Peak (14,267') are the two highest points along the Continental Divide, and considered among the most accessible fourteeners in Colorado. The summits are connected by a .8 mile long saddle, making both attainable in a day with an early start.
BUN â Blood urea nitrogen. 1  Purpose: To detect elevated waste levels in the bloodstream, which is an early sign of reduced kidney function. 2  Normal range: 7 to 20 milligrams per deciliter (mg/dl). 3  How this test is conducted: A blood sample is taken and sent for analysis.
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: