Doctor insights on:
What Does A High T4 Count 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
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
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
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
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
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
My T4, FREE test came in range but TSHW/REFLEX TO FT4 CAME 5.80 (HIGH) WHAT THAT MEAN? WHAT NEEDS TO BE DONE?
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