Normal test range for an adult: 0.40 – 4.50 mIU/mL (milli-international units per liter of blood). T4: thyroxine tests for hypothyroidism and hyperthyroidism, and used to monitor treatment of thyroid disorders. Low T4 is seen with hypothyroidism, whereas high T4 levels may indicate hyperthyroidism.
What is a normal TSH level in a woman?
The normal range of TSH levels in non-pregnant adult women is 0.5 to 5.0 mIU/L. In women, during the menstruation cycle, pregnancy, or after menopause, TSH levels may fall slightly outside the normal range, because of fluctuating levels of estrogen.
What is normal TSH level for age?
Low TSH levels usually mean that you’re producing too much thyroid hormone.
| Age range | Normal | Low |
|---|---|---|
| 18–30 years | 0.5–4.1 mU/L | < 0.5 mU/L |
| 31–50 years | 0.5–4.1 mU/L | < 0.5 mU/L |
| 51–70 years | 0.5–4.5 mU/L | < 0.5 mU/L |
| 71–90 years | 0.4–5.2 mU/L | < 0.4 mU/L |
What if T3 and T4 is normal and TSH is high?
When the thyroid gland becomes inefficient such as in early hypothyroidism, the TSH becomes elevated even though the T4 and T3 may still be within the “normal” range.
What should my thyroid levels be?
TSH normal values are 0.5 to 5.0 mIU/L. Pregnancy, a history of thyroid cancer, history of pituitary gland disease, and older age are some situations when TSH is optimally maintained in different range as guided by an endocrinologist. FT4 normal values are 0.7 to 1.9ng/dL.
What TSH level is considered hyperthyroidism?
A low TSH level—below 0.5 mU/L—indicates an overactive thyroid, also known as hyperthyroidism. This means your body is producing an excess amount of thyroid hormone.
What does a TSH of 7.2 mean?
The doctor ordered a hormone panel and found a blood thyroid-stimulating hormone (TSH) level of 7.2 microunits per milliliter (mlU/L). TSH triggers the thyroid to make hormones that control metabolism, so elevated TSH is considered a sign the thyroid might be making too little thyroid hormone.
What does a TSH level of 5.4 mean?
Subclinical hypothyroidism is defined as a thyroid stimulating hormone (TSH) level of 4.6 to 10 mIU/L. A normal TSH level is 0.4 to 4.0 and full-blown hypothyroidism is 10 or higher.
What is the normal range of thyroid function?
Thyroid function tests are used to tell how well the thyroid is working. Greater-than-normal values may be due to hyperthyroidism, thyroid cancer or high levels of a protein that carries T3 in the blood. A typical normal range, says Medline Plus, is 4.5 to 11.2 micrograms per deciliter.
What is the normal lab value for thyroid?
Normal lab values are 0.4 to 4.0 milliliters per deciliter; this range is less if under treatment for a thyroid disorder, at 0.5 to 3.0 milliliters per deciliter. A high level means the thyroid gland is failing, or hypothyroidism. In the opposite situation, when the TSH level is low, hyperthyroidism is indicated.
Is there a “best” thyroid test?
Best for follow-up on results: LetsGetChecked
