We took three of the top bicycle iPhone holders for a test pedal to see which one kept our little touch-screen buddy safe and sound. Crave UK. Phones make trusty , MP3 players, and cycling computers--as well as handy phones--so they can replace a pocket full of gear on your daily commute or monthly trek.
Creatinine and creatinine clearance tests measure the level of the waste product creatinine in your blood and urine. These tests tell how well your kidneys are working. The substance creatine is formed when food is changed into energy through a process called metabolism.he blood creatinine level shows how well your kidneys are working. A high creatinine level may mean your kidneys are not working properly. The amount of creatinine in the blood depends partly on the amount of muscle tissue you have. Men generally have higher creatinine levels than women.
Your doctor may suggest a ferritin test if other blood tests have shown that the level of oxygen-carrying protein in your red blood cells (hemoglobin) is low, or if the proportion of red blood cells to the fluid component in your blood (hematocrit) is low.