I f you mean space, that has been defined in many ways, 60 miles, 62 miles, 80 miles, 100 miles. For â¦ that answer you need to specify what you really need to know. Like where is there no more air, what is the International definition of the beginning of space.
If the level is not quite right, the doctor can easily work out from the blood test what the dose should be. Lithium blood tests need to be taken at least 12 hours after the last dose of lithium to make sure the test is reliable. Any time a change is made in the dose, the level has to be checked about five days later.
Creatinine and creatinine clearance tests measure the level of the waste product creatinine (say kree-AT-uh-neen) in your blood and urine. These tests tell how well your kidneys are working.lood creatinine level. The blood creatinine level shows how well your kidneys are working. A high level may mean your kidneys are not working as they should. The amount of creatinine in the blood depends partly on the amount of muscle tissue you have.