Normal values range from 0.4 - 4.0 milli-international units per liter (mIU/L). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.
The primary system also allows for absentee or early voting, while caucuses do not. The term covers a few different kinds of elections, though they all have ballots. While caucuses tend to be split between open and closed, there are several different kinds of primaries.
Caucuses are simply meetings, open to all registered voters of the party, at which delegates to the party's national convention are selected. When the caucus begins, the voters in attendance divide themselves into groups according to the candidate they support.