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Doctor insights on: What Does A High T4 Count Mean

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My free T4 is high 19.30 pmol/l and my TSH is also high 4.530 mlu/l. What does this mean?

My free T4 is high 19.30 pmol/l and my TSH is also high 4.530 mlu/l.  What does this mean?

Few possibilities: These labs seem at odds, with TSH suggesting overactive thyroid and ft4 underactive thyroid. Free T4 tests can be inaccurate in some people who have interfering substances present. Another possibility is a tumor in the pituitary secreting too much TSH resulting in thyroid overactivity, and high thyroid hormone levels. This is quite rare, however. Your doctor can help sort this out. ...Read more

Dr. David Sneid
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Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


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What does high T4 level mean?

What does high T4 level mean?

It can mean: An elevated level of thyroid hormone, either due to hyperthyroidism or thyroid inflammation. It can be falsely elevated by estrogen therapy. Other thyroid tests are more reliable. The T3 (liothyronine) you're receiving is potentially dangerous and should not be taken. It can not me measured in the blood and has potential toxicity. Use brand name T4 only if replacement is required, . ...Read more

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High TSH levels but normal T4 levels, i don't understand what this means?

High TSH levels but normal T4 levels, i don't understand what this means?

Early hypothyroidism: If the elevated TSH persists, it generally indicates early hypothyroidism, which can easily be diagnosed and treated by your doctor. ...Read more

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My TSH is normal and T4 is high? What does that mean?

My TSH is normal and T4 is high?  What does that mean?

How high? Free T4: Total T4 depends on thyroid binding globulins and may be elevated in pregnancy, contraceptive pill intake etc. If TSH is normal and you do not have any symptoms, you can leave it alone. At your next visit with your doctor you may discuss getting free T4 and T3 (liothyronine) done for confirmation of normal status. ...Read more

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I have a high TSH but normal T4 levels, what does this mean?

I have a high TSH but normal T4 levels, what does this mean?

Hypothyroidism: The TSH test is10 times more sensitive for the diagnosis of hypothyroidism that the t4. The TSH is reported on a log scale so that small changes in the TSH value are caused by relatively big changes in the blood level. This is a reflection of the pituitary being extremely sensitive to change in the T3 (liothyronine) level if you have symptoms it would be wise to seek treatment. ...Read more

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T4 total elevated means what?

T4 total elevated means what?

Need more info: All lab results need to be evaluated in the clinical context and the doctor who ordered the test is usually in the best position to do that. Total T4 alone is not a very good test. One needs, free T4 and TSH levels to provide a meaningful opinion. ...Read more

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My T4, FREE test came in range but TSHW/REFLEX TO FT4 CAME 5.80 (HIGH) WHAT THAT MEAN? WHAT NEEDS TO BE DONE?

My T4, FREE test came in range but TSHW/REFLEX TO FT4 CAME 5.80 (HIGH) WHAT THAT MEAN? WHAT NEEDS TO BE DONE?

See your MD: Without giving specific medical advice in general a high TSH may be considered a sign of subclinical hypothyroidism You should see your physician to get further explanation. ...Read more

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What is meant by low TSH high free t4?

What is meant by low TSH high free t4?

Hyperthyroidism: A low TSH and high T4 is an indication of over-active thyroid (hyperthyroidism). This should be evaluated further for any potential cause and discuss treatment options with your physician. Referral to an endocrinologist may be necessary. ...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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It says for my thyroid results "elevated t4." what does this mean and how bad is this for my health?

It says for my thyroid results "elevated t4." what does this mean and how bad is this for my health?

Could be hyperthyroi: Your thyroid may be overactive, but you need more tests than just a T4 to determine this. Common symptoms of hyperthyroid are nervousness, tremor, sweating, rapid heart rate. Untreated, these symptoms can be dangerous, especially to the heart. Treatment includes medications, possibly surgery or radioactive iodine. You may need to see an endocrinologist. ...Read more

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My free T4 is high 19.30 pmol/l and my TSH is also high 4.530 mlu/l. What does this mean?

Few possibilities: These labs seem at odds, with TSH suggesting overactive thyroid and ft4 underactive thyroid. Free T4 tests can be inaccurate in some people who have interfering substances present. Another possibility is a tumor in the pituitary secreting too much TSH resulting in thyroid overactivity, and high thyroid hormone levels. This is quite rare, however. Your doctor can help sort this out. ...Read more

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What does it mean when you get bloodwork done and your mvp level is high, your absolute eos level is high, your T4 level is high, your LD level is hi?

Abnormal lab: It means you should call the doc who ordered the labs and ask for an explanation. The abnormal levels imply a process or processes that are causing them to be abnormal. The dr. Has the knowledge of the rest of your status to build from. Lab tests are significant when you know the patients full picture. ...Read more

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What does normal tsh, but high free T4 mean?

Recheck the labs: Normally, if the ft4 is high, either due to hyperthyroidism or taking too much synthroid, (thyroxine) your TSH is low. Mistakes in labs can occur, so first have them rechecked. Rarely, you can have a pituitary tumor that makes TSH and causes hyperthyroidism, giving you both increased TSH and ft4. But this is rare, and more likely there is a simple explanation. ...Read more

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What does high TSH 5.250 mean when all other bloodwork normal including t4?

What does high TSH  5.250 mean when all other bloodwork normal including t4?

Elevated TSH: Tsh (thyroid stimulating hormone) is produced by the pituitary gland in the brain. When the circulating thyroid hormone (produced by thyroid gland) is insufficient as in hypothyroidism, the TSH goes up. If there is too much circulating thyroid hormone as in hyperthyroidism, the TSH goes way down. So with your elevated tsh, i would guess you are hypothyroid. This is always confusing. Good luck. ...Read more

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33 yr M 6'2 185 pounds. High TSH levels but normal free T4, whst exactly does this mean?

33 yr M 6'2 185 pounds. High TSH levels but normal free T4, whst exactly does this mean?

Subclinical hypothyr: Hi. That is commonly seen, now that we screen so well for disorders of thyroid function. It's called subclinical hypothyroidism, meaning that with extra push from the pituitary (TSH), the remaining thyroid tissue is able to make thyroid hormone in the normal range. You should start taking thyroid hormone now, and not wait till your metabolic tank is empty. Good luck! ...Read more

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Hi, What does it mean when T3 and T4 are normal and TSH is high at 7.14. What would this number mean to health. Thanks. Pls help.

See below: Elevated TSH with normal T3 and T4 means poor thyroid reserve and pending hypothyroidism. Many doctors will treat patients at this stage to prevent the development of hypothyroid state. It would be prudent to consult an endocrinologist. ...Read more

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What does a low normal TSH (1.4) and high T4 (11.1) mean? T3 (liothyronine) is normal .

What does a low normal TSH (1.4) and high T4 (11.1) mean? T3 (liothyronine) is normal .

Subclinical thyroid: Could represent subclinical hyperthyroid or early thyroid disease or lab error. Should monitor this over a period of months to see if there is any change. ...Read more

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Blood test shows TSH w/ reflex to FT4 is 13.62 (high) & Free T4 is 1.1 (normal). How would you describe what these results mean?

Thyroid tests: 26F US had TSH 13.6 and Ft4 1.1. Asks: How could you describe what these results mean? ANS: Need 2 know lot more about U which ur Drs already knows so better to ask them. Such as 1. U on BCP? 2. Why was test done? 3. Hx of thyroid problems n past? 4. Taking thyroid meds? 5. Pregnant? As TSH is high, u did not give normal lab range for FT4 but it seems lowest range of normal. Hypothyroid? ...Read more