What Is Normal TSH Level For Adults?

by | Last updated on January 24, 2024

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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 level of TSH is dangerous?

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 normal TSH level for age?

Age range Normal Low 18–30

years


0.5–4.1 mU/L


31–50 years 0.5–4.1 mU/L 51–70 years 0.5–4.5 mU/L 71–90 years 0.4–5.2 mU/L

Is 1.8 TSH level good?

At Cleveland Clinic labs,

0.4 to 5.5 is considered normal

. In the absence of symptoms, and if other thyroid tests are normal, TSH levels between 5.6 and 10 are considered subclinical, a level that indicates possible early-stage disease. A TSH level above 10 indicates a thyroid disorder.

At what level of TSH do you treat?

If your TSH level is

higher than 10 mIU/L

, you should start treatment, because you will develop symptoms of an underactive thyroid, even if you don't have them now.

Is a TSH level of 3.5 normal?

The normal range of TSH levels in adults is

between 0.4 to 4.0 mIU/L

(milli-international units per liter). Some research suggests that this range should actually be more like 0.45 to 2.5 mIU/L. The TSH range may also vary slightly based on the testing facility where your blood is being analyzed.

What is a normal TSH level for a woman?

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.

Is a TSH level of 7 high?

According to Cappola, her research regarded

mildly elevated TSH

levels as those in the 4.5 to 7 mU/L range, while very elevated TSH levels were considered to be those greater than 20 mU/L.

What happens when your TSH is too high?

If your TSH levels are abnormally high, it could mean you have

an underactive thyroid, or hypothyroidism

. That's because it indicates your pituitary gland is producing more TSH in an effort to stimulate your thyroid to produce thyroid hormone, according to the Mayo Clinic.

Is TSH 0.02 Dangerous?

Provided that the thyroid hormone (FT4 or TT4) concentration is within normal limits, any minor abnormality in serum TSH (0.02-20.0 mIU/L) arising from a mild (subclinical) thyroid condition

is unlikely to affect the outcome

of the hospitalization, and can be deferred for evaluation 2-3 months after discharge.

Is 3.8 TSH normal?

The normal range of TSH levels is

0.4 to 4.0 milli-international units per liter

. If you're already being treated for a thyroid disorder, the normal range is 0.5 to 3.0 milli-international units per liter. A value above the normal range usually indicates that the thyroid is underactive. This indicates hypothyroidism.

What is a low 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 happens if TSH is high in female?

High TSH levels can

mean your thyroid is not making enough thyroid hormones

, a condition called hypothyroidism. Low TSH levels can mean your thyroid is making too much of the hormones, a condition called .

Can stress affect TSH levels?



Stress increases production of the hormone cortisol

, which is produced by the adrenal glands. Cortisol can inhibit secretion of TSH (thyroid stimulating hormone) from the pituitary gland, leading to partial suppression of thyroxine, the main hormone produced by the thyroid gland,” Dr. Guandalini explains.

What time of day is TSH highest?

Yes. TSH concentration follows a diurnal rhythm. Typically, the peak occurs

around midnight

and the nadir (~50% of the peak value) around mid-day.

Diane Mitchell
Author
Diane Mitchell
Diane Mitchell is an animal lover and trainer with over 15 years of experience working with a variety of animals, including dogs, cats, birds, and horses. She has worked with leading animal welfare organizations. Diane is passionate about promoting responsible pet ownership and educating pet owners on the best practices for training and caring for their furry friends.