Can You Be Hyperthyroid with Normal Tsh?

Subclinical hyperthyroidism is when you have low levels of TSH but have normal levels of T3 and T4. If you're experiencing symptoms of subclinical hyperthyroidism, your doctor can use a series of blood tests to come to a diagnosis.

Can you have hyperthyroidism with normal TSH?

Hyperthyroidism is associated with suppressed levels of TSH (typically, <0.5 mU/L). Rarely, an elevated TSH level can be associated with hyperthyroidism if there is a pituitary adenoma secreting TSH. If the TSH is normal (0.5-5 mU/L in most labs), a diagnosis of hyperthyroidism is very unlikely.

Can hyperthyroidism be misdiagnosed?

Thyroid conditions can easily be misdiagnosed as symptoms are similar to a range of other health conditions. If you have an overactive thyroid it's important that you have your thyroid stimulating hormone (TSH), T4 and T3 hormone levels checked regularly.