How low can your TSH go?

Reference TSH ranges remain controversial, but for most people, the normal range falls between 0.4 and 4.0 mU/l . Having an overactive or underactive thyroid can cause health issues that interfere with a person's daily life. During pregnancy, unusually high or low TSH levels can lead to complications.

What is a dangerously low TSH level?

Patients with TSH levels below 0.1 mIU/L are more likely to have complications due to their SH such as atrial fibrillation, bone loss and conversion to overt hyperthyroidism. Therefore, in certain groups of patients with TSH below 0.1 mIU/L, treatment should be strongly considered.

Can TSH get too low?

Low TSH levels can mean your thyroid is making too much of the hormones , a condition called hyperthyroidism. A TSH test does not explain why TSH levels are too high or too lo

What is the minimum TSH level?

Normal values are from 0.4 to 4.0 mIU/L for those with no symptoms of an under- or over-active thyroid. If you are being treated for a thyroid disorder, your TSH should be between 0.5 and 2.0 mIU/L. This means that you are being treated appropriately.

Is TSH 0.02 too low?

Many physicians use a serum TSH target value of 0.05-0.1 mIU/L for low-risk patients and a TSH of 0.01 mIU/L for high-risk patients . Some physicians use a low-normal range therapeutic target for TSH when patients have undetectable serum Tg levels and have had no recurrence 5-10 years after thyroidectomy.

What is a critical TSH level?

The standard reference range for the TSH level is anywhere between 0.30 and 5.0 uIU/mL . If your TSH level is higher than 5.0 uIU/mL, then the lab will flag you as “high,” and you may experience the symptoms listed above 5.0 uIU/mL. Values of the TSH level more than 10.0 uIU/mL need long-term thyroid supplements.

What is a low TSH level in a woman?

A TSH level higher than 5.0 usually indicates an underactive thyroid (hypothyroidism) and a TSH level lower than 0.4 indicates the presence of excessive thyroid hormone and overactive thyroid (hyperthyroidism).

Is a .21 TSH too low?

The typical range of reference for TSH levels is anywhere between 0.45 and 4.5 milliunits per liter (mU/L) . A recent study suggests that the normal range should be more like 0.45 to 4.12 mU/L . TSH can vary wildly based on your age, sex, and stage of life.

What happens if your TSH is too low?

TSH is a hormone made by the pituitary gland that tells the thyroid gland how much thyroid hormone to make. Symptoms of low TSH include weight loss, fatigue, confusion, heat intolerance, fast heartbeat, high blood pressure and other symptoms .

Should I worry if my TSH is low?

Low TSH levels can mean your thyroid is making too much of the hormones, a condition called hyperthyroidism . 31 July 2020

What causes TSH levels to be low?

However, low TSH can also be caused by conditions other than hyperthyroidism, such as severe illness or inflammation, by medication, or by disorders that may also result in hypothyroidism (low thyroid hormone levels) . In those cases, symptoms will vary depending on the underlying condition.