what is the number for normal tsh test
your provider may also check your tsh level if you are planning to get pregnant normal values range from 0 4 to 4 0 milli international units per liter miu l tsh values can vary during the day it is best to have the test early in the morning experts do not fully agree on what the upper number should be opinions vary from 2 5 to 4 0 miu l