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What does it mean if your TSH is low and you AREN’T taking thyroid medication? If you are NOT taking thyroid medication and you have a low TSH then that truly might be a sign that you are hyperthyroid or have a condition known as subclinical hyperthyroidism.
A low thyroid stimulating hormone (TSH) level can indicate hyperthyroidism, an overactive thyroid. Learn more about the symptoms of low TSH, what causes it, and how it's treated.
Hypothyroidism occurs when the thyroid gland cannot produce enough thyroid hormone to meet the needs of the body. It is diagnosed by an elevated TSH level and low T4 levels. Primary hypothyroidism is very common, particularly in women, and is reported to affect at least 5% of the US population.
When thyroid hormone levels are low, the pituitary gland increases secretion of TSH and indicates that your thyroxine dose should be increased. If your TSH level is low, your thyroid hormone dose is excessive and should be reduced.
Adjusting levothyroxine dosage is crucial if your TSH levels are low. By working closely with your healthcare provider, you can optimize your medication dosage and ensure optimal thyroid function. Remember to regularly monitor your TSH levels and communicate any symptoms or concerns to your doctor.
When TSH is low (over-replacement), the daily dosage should be decreased by 12.5 to 25 mcg. When TSH is high (under-replacement), the daily dosage is increased by 12.5 to 25 mcg per day.
If the results show that TSH is high and T-4 is low, then the diagnosis is hypothyroidism. In some cases, the thyroid hormone T-3 may be measured as well. If the second test shows high TSH but T-4 and T-3 are in the standard range, then the diagnosis is a condition called subclinical hypothyroidism.