What is considered a dangerously high TSH level?

Question

Accepted Answer

TSH level above 10 mIU/L is dangerously high, since it means your thyroid gland has slowed down too much. This condition is called hypothyroidism. If your level crosses 20, you face a higher risk of serious complications. You might feel tired all the time, gain weight suddenly, or feel cold even in normal weather. Don't guess your condition from numbers alone; ask your doctor to explain your report properly.