2. TSH Tests

TSH tests are simple and widely available. The required blood test takes fewer than five minutes, is close to painless, and can be analyzed quickly. A normal TSH level is typically from .04 to 4.0 milli-international units per liter. Certain medications can affect these results, so people who take the test should inform their doctor of all of their current medications and supplements beforehand.

TSH Tests Normal Levels jarun011 / Getty Images

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