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.
Normal value for GFR (which vary depending on age, sex, and body size) is approximately 125mls/min (=180L/day) in young men. - Normal value declines with age, is lower in women, and lower with smaller body size. Functions of the Kidney. 1.) Removal of End Products of Metabolism.