Medically reviewed by Kelly Wood, MD Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.4 and 4.5 ...

Your doctor will order a TSH test if you exhibit thyroid disorder symptoms like hair loss or fatigue. High TSH levels could be a sign of hypothyroidism while low TSH levels may signal hyperthyroidism.

Intermittent or non-compliance with levothyroxine (L-T4) replacement therapy will result in discordant serum TSH and FT4 values (high TSH/high FT4) because of a persistently unstable thyroid state ...

Lower iodine levels and use of non-iodized salt are linked to a higher risk of frailty in people with type 2 diabetes. This ...

When TSH is unexpectedly high, ask the laboratory to re-measure the specimen diluted, preferably in thyrotoxic serum, to check for parallelism. Request that the laboratory analyze the specimen by ...