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.
1 Experts now use a reference level of 5 micrograms per deciliter to identify children with blood lead levels that are much higher than most childrenâs levels. 2  This new level is based on the U.S. population of children ages 1-5 years who are in the highest 2.5% of children when tested for lead in their blood. What has not changed is the recommendation for when medical treatment is advised for children with high blood lead exposure levels. 2  The new recommendation does not change the guidance that chelation therapy be considered when a child has a blood lead test result greater than or equal to 45 micrograms per deciliter.