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Doctor insights on: Underactive Thyroid Tsh Range

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Dr. Quang Nguyen
933 Doctors shared insights

Thyroid Stimulating Hormone (Definition)

A TSH test measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland and tells the thyroid gland to make and release the hormones thyroxine ...Read more


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Does TSH 4, 83 mean hypothirodism (underactive thyroid) and ft4 - is 9 (does it also mean underactive thyiroid)?

Does TSH 4, 83 mean hypothirodism (underactive thyroid) and ft4 - is 9 (does it also mean underactive thyiroid)?

It depends/can mean,: This can mean under active thyroid depending on the ranges and whether or not there're symptoms of hypothyroidism, like fatigue, sensitivity to cold, and thinning of hair. The TSH is high normal to high at 4.83 if the upper limit is 5.0 or 3.0 respectively, while the free T4 is low normal if the units of measurement are pool/l. You've already got hypothyroidism so this would help reinforce it.

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My TSH was 4.1 & my T4 was 13. Do you think I have a borderline underactive thyroid?

My TSH was 4.1 & my T4 was 13. Do you think I have a borderline underactive thyroid?

Pretty normal: Aware that TSH is high normal at 4.1 but T4 normal. If concerned about hypothyroid, check TPO antibodies and check levels of TSH, T4 and T3 (liothyronine) every 6 months. Keep in mind the symptoms of hypothyroid very common.

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I have underactive thyroid! Have tried every diet there is and still can not lose weight despite normal TSH levels! Any suggestions, ?

I have underactive thyroid! Have tried every diet there is and still can not lose weight despite normal TSH levels! Any suggestions, ?

Euthyroid: If TSH is normal you are now euthyroid. However there is a range of nl. It may help to be at the lower end of the range than the higher. It takes time for the body to adjust and you need to change your eating habits and increase exercise long term to get to lose weight.

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Does a TSH level of 0.8 indicate an overactive or underactive thyroid gland?

Does a TSH level of 0.8 indicate an overactive or underactive thyroid gland?

TSH: Cant tell without the total T4 or free t4. Low TSH is usually a sign of hyper thyroidism if your thyroid is suppressing TSH production due to over secretion of thyroid hormone. Rarely the brain signal from pituitary can be low leading to what's called "central" hypothyroidism.

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What does a normal TSH but low free T4 level mean? Can you have an underactive thyroid with a low T4 alone? Tsh 2.45 T4 7

Thyroid function: When TSH is normal and T4 is low this is called subclinical hypothyroidism. It is not treated unless if you have symptoms. Also if TSH > 10 some would start treatment. Hope that helps answer your question.

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I have an underactive thyroid. I take 75mg. My TSH level is 47. I don't feel we'll but the doctor won't give me a higher dosage?

Time: It can take weeks until patients with hypothyroidism feel better once they start levothyroxine daily. Generally we check TSH about 6 weeks following the start of or change in dose to make sure it is the right dose.

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Hi, I have an underactive thyroid. I'm on 75mg but still don't feel right. My TSH level is 47 but my doctor won't increase it. What level should it be?

Hi, I have an underactive thyroid. I'm on 75mg but still don't feel right. My TSH level is 47 but my doctor won't increase it. What level should it be?

2-3: I am going to assume you are taking 75 micrograms and not milligrams of thyroid medication as milligrams would be way too high. Most common thyroid medications are only in the form of t4, the inactive form of the hormone. Many people are unable to convert the T4 into the active form of the hormone - T3 (liothyronine) and need to also be on t3 (liothyronine). You should ask your doctor about adding T3 (liothyronine) to your regimen.

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50 year old female, HDL 18.0, LDL <30, triglycerides 1729, chol/hdl ratio 12.50. I also have an underactive thyroid right now TSH 2.82. Advvice?

50 year old female, HDL 18.0, LDL <30, triglycerides 1729, chol/hdl ratio 12.50. I also have an underactive thyroid right now TSH 2.82. Advvice?

Significant Medical: You need a very good medical partner. Your results show you have significant risk to your heart and brain and arteries. Don't wait for us online but get good advice and change your life as soon as you can.

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Pulse 120-130. Had underactive thyroid 3 yrs, now massively over active (t3 (liothyronine) 37.8, TSH 0.03) 3 weeks since last test (t3 (liothyronine) was 18.7).

Pulse 120-130. Had underactive thyroid 3 yrs, now massively over active (t3 (liothyronine) 37.8, TSH 0.03) 3 weeks since last test (t3 (liothyronine) was 18.7).

Dose adjustment: Please see your doctor to adjust the dose of your medication. You do seem to have hyperthyroid state and would benefit form reducing the dose of your thyroid medication, however, I urge you to consult your doctor rather than adjusting the dose by yourself.

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Could vitamin d have helped your underactive thyroid?

Could vitamin d have helped your underactive thyroid?

Vitamin4 low thyroid: I am not aware of any specific effect on vitamin supplements to low thyroid. If your thyroid is low, which can be confirmed by lab tests, then simple thyroid supplement is the appropriate treatment.

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Does vitamin d help an underactive thyroid?

Does vitamin d help an underactive thyroid?

Not clear: There are studies that show a correlation between vitamin d levels and thyroid disease but correlation does not imply causation. In other words, it isn't clear there is a cause and effect relationship. It's good to keep your vitamin d level above 20, but low levels are may be indicative of a problem, not a cause of it.

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How can I treat my underactive thyroid?

Med eval: Please seek medical evaluation by your physician, an internist or an endocrinologist. After comprehensive assessment, a treatment plan will be recommended to you.

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How can you address an underactive thyroid?

Levothyroxine: This is thyroid hormone replacement. An under active thyroid doesn't make enough thyroid hormone. Fortunately, there is oral replacement medication making it very easy to treat.

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What are some symptoms of underactive thyroid?

What are some symptoms of underactive thyroid?

Many: Some common symptoms are: fatigue, sensitive to cold, dry skin, constipation, hoarse voice, weight gain, high cholesterol, muscle ache/weakness, joint pain, heavy periods, brittle nails/hair, depression. Many other conditions can share these symptoms so if you suspect it, get a thyroid blood test.

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How can I know if I have an underactive thyroid?

How can I know if I have an underactive thyroid?

Tests and Symptoms: Symptoms of low thyroid function are commonly fatigue, weight gain, heavy periods (females), dry skin, hair thinning and loss, depression and constipation. Tsh, free T3 (liothyronine) and free T4 (if TSH is borderline) as well as some other older tests like morning baseline temperature and tendon reflex testing can all detect low thyroid function.

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Dr. Su Fairchild
1,244 Doctors shared insights

Hypothyroidism (Definition)

When the thyroid gland is overactive and too much thyroid hormone is produced, which speeds up metabolism. This results in weight loss, a quick heartbeat, sweating, nervousness, ...Read more


Dr. Quang Nguyen
867 Doctors shared insights

Hypothyroidism (Adult) (Definition)

Hypothyroidism is a condition where the thyroid gland does not secrete enough of the thyroid hormones. Symptoms include cold intolerance, constipation, and fatigue. ...Read more