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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

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Dr. Quang Nguyen
893 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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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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Dr. Jesse Krakauer
441 doctors shared insights

Liothyronine (Definition)

Liothyronine is a thyroid ...Read more


Dr. David Sneid
1,375 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more