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.
If they are healthy, the kidneys typically keep blood creatinine levels in a normal range. As such, creatinine levels are a fairly reliable indicator of kidney function. If the kidneys become impaired for any reason, the creatinine level in the blood will rise.f they are healthy, the kidneys typically keep blood creatinine levels in a normal range. As such, creatinine levels are a fairly reliable indicator of kidney function. If the kidneys become impaired for any reason, the creatinine level in the blood will rise.