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Doctor insights on: Optimal T3 T4 Tsh Levels

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What are the normal levels for tsh, T4 and T3 (liothyronine) for a young man?

What are the normal levels for tsh, T4 and T3 (liothyronine) for a young man?

Depends on lab: Different labs have different reference ranges for normal. You could ask to see your results which will be given to you along with the normal reference range. ...Read more

Dr. Quang Nguyen
943 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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Is TSH levels of 0.03 a lot to worry about. My T3 (liothyronine) and T4 are normal.?

Is TSH levels of 0.03 a lot to worry about. My T3 (liothyronine) and T4 are normal.?

It depends: Are you taking thyroid medication? On any other meds?
Why was this test done?
Have you been told a bout having a thyroid disease? The TSH level in your case is low....Suggesting a possible hyperactive thyroid state.
This could be a lab error as well.
Would check with your doc.. ...Read more

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My T3 levels have been low consistently, TSH normal, T4 on the high end of normal. Is the low T3 anything to be concerned about?

My T3 levels have been low consistently, TSH normal, T4 on the high end of normal. Is the low T3 anything to be concerned about?

Hypothyroid and T3: If the TSH is normal, then that is strong evidence that you are normal. Pituitary TSH responds mostly to T3. If you T3 were too low, the TSH should be high. Indeed, I am not sure why T3 is being measured. There are more problems with the T3 assay than that of T4. This could just be "lab error". ...Read more

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Tsh=0.4 uiu/ml, t4=7.2.T3=1.2 eliisa, TSH is at the lower end of normal range, please comment about levels totality. Best regards.

Tsh=0.4 uiu/ml, t4=7.2.T3=1.2 eliisa, TSH is at the lower end of normal range, please comment about levels totality. Best regards.

Normal range but,,,: The TSH and T4 and t3 (liothyronine) are in normal range but TSH is low normal and T4 is fairly high normal depending on the reference ranges. A free T4 would help also. You've got fatigue, etc. Which is more like hypothyroidism but it might be from another reason. You apparently don't have symptoms of hyperthyroidism like anxiety and difficulty sleeping, so it'd be smart to see your doctor to be sure. ...Read more

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My TSH 3rd generation level came back at 9.490. MY T4 was normal and T3 (liothyronine) was low. Taking 200 mcg. What do these numbers mean?

Still hypothyroid: Not sure how long u have been on thyroid replacement, but if been on 200mcg daily over 6-8 weeks, likely require increase dose. If u have just had u'r medication adjusted the. Repeat TSH usually done in 6 wks; the numbers show that u'r body is still in hypothyroid state and that u'r thyroid gland is making less and less hormone or the T4 is not being converted to T3, (liothyronine) so thyroid medicine needed ...Read more

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I have a TSH level of 5.69 and just found out that my T4 level is 1.1. What does this mean? If my t3+t4 is normal then what could be the problem?

I have a TSH level of 5.69 and just found out that my T4 level is 1.1. What does this mean? If my t3+t4 is normal then what could be the problem?

Check antibodies: Ask your doctor for a test called thyroid peroxidase antibodies. If it's high or positive, then you have autoimmune thyroid disease and will need thyroid replacement in the future, if not now depending on how you feel. ...Read more

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What does it mean if I have high tsh, t3, (liothyronine) T4 levels?

What does it mean if I have high tsh, t3, (liothyronine) T4 levels?

HiTSH=hypo, hiT4 hype: Thyroid function is measured many ways. The TSH is your body's call for more hormone, so a high TSH suggests underactive thyroid, very low TSH overactive. The t4/t3 levels are measures of circulating hormone, so high T4 or T3 (liothyronine) suggest hyperthyroidism and vice versa. T4 levels can beaffected by hormones and so need to be interpreted carefully. For initial testing, the TSH alone best test. ...Read more

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My T3 (liothyronine) and T4 levels are normal, TSH is 7.76 inspire of taking thyronorm 50mg everyday, please advise?

My T3 (liothyronine) and T4 levels are normal, TSH is 7.76 inspire of taking thyronorm 50mg everyday, please advise?

Higher dose: Tsh is more sensitive than T3 (liothyronine) or T4 levels for identifying patients whose thyroid levels are abnormal for them. A high TSH means that your pituitary gland is trying to get your thyroid to make more thyroid hormone. Since your thyroid can't (or you wouldn't be on thyroid hormone), you probably need a stronger thyroid tablet. Talk to your doc to make sure you're getting the most from your pills. ...Read more

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I have a low level of t3, (liothyronine) ft3, (liothyronine) t4, and ft4. However I have a high amount of tsh. What does it say?

Hypothyroidism: Ask the doctor who ordered the tests for more details, but I think you need to take thryoid pills. ...Read more

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My TSH levels are 4.57; Free T4 =1.2; T3 (liothyronine)=103. Are my Free T4 and T3 (liothyronine) levels normal? If they are normal why is my TSH elevated?

My TSH levels are 4.57; Free T4 =1.2; T3 (liothyronine)=103. Are my Free T4 and T3 (liothyronine) levels normal? If they are normal why is my TSH elevated?

Slightly low: I see that you are on thyroid hormone. The TSH will be the best indicator of whether you need more or less medication. The ideal TSH is around 1-2, so currently you could use a slightly higher dose. The "normal range" applies to a population of people. Your individual normal range is much more narrow. If your pituitary wants your free T4 to be 1.3 or 1.4, it will put out TSH to try to do so. ...Read more

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My T3 (liothyronine) levels are 98 and my T4 levels are 10.2 but my TSH levels are 0.19? is it correct also my homocystine levels are 51.5? please advise

Subclinical hyperthy: The T3 (liothyronine) and T4 levels are normal, but the TSH is slightly low. You did not mention if you are any medication for your thyroid. If you are not, the low TSH could indicate subclinical hyperthyroidism- where your thyroid is making slightly more thyroid hormone than your pituitary gland is happy with. Most people with this mild an abnormality will have no symptoms. It should be followed. ...Read more

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TSH normal at 1.35 T4 8 (range 10-20) T3 (liothyronine) 5.8 (range 3.2-6.0) what are reasons for low T4 levels when TSH is normal and T3 (liothyronine) high normal?

TSH normal at 1.35 T4 8 (range 10-20) T3 (liothyronine) 5.8 (range 3.2-6.0) what are reasons for low T4 levels when TSH is normal and T3 (liothyronine) high normal?

Hypothyroidism: This likely indicates secondary hypothyroidism, due to problem with your pituitary gland. Normally, if the T4 is low, the pituitary will produce more TSH to try and induce the thyroid glad to produce more T4. However, if there is a problem with the pituitary, then the TSH is either low or normal despite a low T4. Be sure to follow up with the doctor how ordered these tests. ...Read more

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I have a TSH level of 5.69.Is having a T4 level of 1.1 a good sign? I haven't tested my T3 (liothyronine) yet. What is the probability that it will be normal? Advice

I have a TSH level of 5.69.Is having a T4 level of 1.1 a good sign? I haven't tested my T3 (liothyronine) yet. What is the probability that it will be normal? Advice

You may have sub cli: You may have subclinical hypothyroidism with slightly eleveted TSH and normal t4, good chances your T3 (liothyronine) will be normal too. ...Read more

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My TSH level is 122, total T3 (liothyronine) 78 and total T4 2.2 what does that mean?

My TSH level is 122, total T3 (liothyronine) 78 and total T4 2.2 what does that mean?

Hypothyroidism: You are already on thyroxine; meaning you are diagnosed with hypothyroidism. Under active thyroid. Your TSH is high;t3;t4 levels are low. Your doctor has to adjust medication till the levels are in therapeutic range. Why you have hypothyroidism? Is it goiter, nodule or autoimmune? See an endocrinologist. Pls. Read thyroid nodule- http://doctorrajput. Com. Thanks. ...Read more

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If you have a normal TSH and T4 levels but your T3 (liothyronine) is low do you need to increase levothyroxine?

Depends: The T3 (liothyronine) may be low before you take your medication and isn't necessarily abnormal. If you still have symptoms and the TSH is not in the low part of the normal range then adding more levothyroxine is probably the right thing to do. Some people do not convert enough of the T4 to T3 (liothyronine) and they need to take some T3 (liothyronine) in addition to T4 or take a natural thyroid med like Armour Thyroid or nature-throid. ...Read more

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7 year old has TSH level of 16, T3 (liothyronine) and T4 are normal could this correct itself without medication?

Thyroid: A pediatric endocrinologist should be consulted. They will follow this and make the determination if medication is necessary, by finding the cause of the abnormal TSH. ...Read more

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My T4 & T3 (liothyronine) levels are in the normal range but my TSH is high. Why so? And having t3&t4 in normal level can I avoid the meditation?

If: You are on thyroid medication it means the dose should be slightly increased. If not on medication it could be premonition of future needed medication. Follow through carefully. ...Read more

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I have recently got very low levels of T3 and T4. My TSH is fine. I gained lot of weight and had a very high stress. Do I need some treatment now?

I have recently got very low levels of T3 and T4. My TSH is fine. I gained lot of weight and had a very high stress. Do I need some treatment now?

Just a thought: But your pituitary may be incapable of increasing the TSH and a "normal" level may actually be due to a lack of proper pituitary function (producing a higher TSH in the fact of low thyroid gland function. I would suggest a PITUITARY evaluation and after that is complete I would treat you with Thyroid replacement therapy!
Hope this helps
Dr Z ...Read more

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I am a 25 y/o female and my TSH levels came back. 05 and then, once blood was drawn again, . 01. T3 (liothyronine) and T4 levels in normal range. Indication?

? accurate. .: ...decimal point? Normal TSH levels are considered to be 0.5 to 4.5/5.0 mIU/L. So 0.05 and 0.01 would be VERY LOW, and strongly indicative of HYPERthyroidism or an overactive thyroid gland. I would think if these values were accurate you would be very symptomatic with tremulousness, racing heart rate, unexplained weight loss, etc. Please check your lab results & continue working with your doc! ...Read more

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MCH slightly elevated at 34 (MCV) normal but on high side is it any relation to low t3 (liothyronine) levels 46? TSH and T4 also low laying but normal range.

Yes: Thyroid T3 (liothyronine) levels affect red cell indices, refer to Dorgalaleh et al article Via web literature which answers your question well. ...Read more

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Are thyroid levels normal TSH. 278 T4. 9 T3 (liothyronine) 72?

The tsh: Is low and should be repeated along with a free t4. The other two tests (T4 and t3) are not useful. Discuss with your doctor. ...Read more

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Should methimazole be dosed on TSH or ft4, t4, t3, (liothyronine) ft3 levels?

Should methimazole be dosed on TSH or ft4, t4, t3, (liothyronine) ft3 levels?

All of the above: Methimazole is a thionimide that inhibits the formation of thyroid hormone it is important to measure tsh, ft4 ; ft3 (liothyronine) levels to have a better idea of the physiology causing the hyperthyroidism, ie is it subclinical hyperthyroidism, t3 (liothyronine) preferential secretion, or severe thyrotoxicosis. The TSH can be very suppressed with only minimally elevated t4/t3 (liothyronine) which would not need as high a dose. ...Read more

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My tsh level is.01 bit my t3 and t4 are normal. I don't jave a thyroid. What does this mean.

My tsh level is.01 bit my t3 and t4 are normal. I don't jave a thyroid. What does this mean.

Overtreatment: With thyroid replacement likely since tsh should be between 0.4-4.0 since no thyroid I assume you are being treated? Can back off a little on dose, even is T3, T4 normal, follow tsh is better, check with endocrinologist ...Read more

Dr. Jesse Krakauer
460 Doctors shared insights

Liothyronine (Definition)

Liothyronine is a thyroid agent. ...Read more


Dr. David Sneid
1,422 Doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid agent. ...Read more