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Doctor insights on: Ft4 Tsh Ft3

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What is the definition or description of: ft4/tsh/ft3?

What is the definition or description of: ft4/tsh/ft3?

See answer details.: Thyroid stimulating hormone (TSH) is produced by the pituitary gland and stimulates the thyroid gland (in your neck) to produce the thyroid hormone thyroxine (t4) which is then converted into triodothyronine (t3) which is the active hormone that stimulates metabolism. Both T3 (liothyronine) and T4 are mostly bound to thyroid binding globulin, but free (unbound) amounts exist in your blood; these are ft3 and ft4. ...Read more

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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Can I have hyperthyroid symptoms with normal ft4,tsh and ft3? Have weight loss, increased HR, Nervousness, inner tremors.

Can I have hyperthyroid symptoms with normal ft4,tsh and ft3? Have weight loss, increased HR, Nervousness, inner tremors.

Since: Labs are normal I don't believe your symptoms are due to the thyroid. See your doctor to find out cause. Further testing may help ...Read more

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Help u/standing results, pls. TSH, FT4, FT3 all bottom end of normal range. TgAb and TPOAb are neg. Have both hypO/ER syms. What could this mean?

Help u/standing results, pls. TSH, FT4, FT3 all bottom end of normal range. TgAb and TPOAb are neg. Have both hypO/ER syms. What could this mean?

Euthyroid: Your thyroid function is normal and your symptoms are not due to thyroid disease. Remember, TSH is suppressed by thyroid hormone so a low level means overactivity. If all measures are low normal, you're normal. You could have pituitary insufficiency, but that wouldn't give you sx of thyroid excess-just the opposite. ...Read more

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Tsh ft3 ft4 all normal.never took thyroid meds.tsh is fluctuating alot and have tpo ab 42(range <35),tgo ab(130 now 0).any chance to not develop hypo?

Tsh ft3 ft4 all normal.never took thyroid meds.tsh is fluctuating alot and have tpo ab 42(range <35),tgo ab(130 now 0).any chance to not develop hypo?

Can't predict: as long as TSH fluctation in normal range, no conern :) could also become hyperthyroid, but can't predict this either ...Read more

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My tsh, ft3 & ft4 levels have increased significantly over the past 6 weeks, following a 50mcg increase in my thyroxine dose. What does this mean?

My tsh, ft3 & ft4 levels have increased significantly over the past 6 weeks, following a 50mcg increase in my thyroxine dose. What does this mean?

Recheck the labs: Based on your question, this does not make sense. An increase in your thyroid dose should increase the T3 (liothyronine) and t4, and decrease the tsh. Was there a lab error? Are you taking the meds correctly? Is there something else going on with your thyroid? Are you in recovery from a severe illness? Check with your doctor. ...Read more

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Hello, I have 1/2 thyroid. I have hypo symptoms. I had blood tests tsh, ft3, ft4. all normal. how do i find a doctor that will treat symptoms?

Hello, I have 1/2 thyroid. I have hypo symptoms. I had blood tests tsh, ft3, ft4. all normal. how do i find a doctor that will treat symptoms?

Symptoms: Hi. Your thyroid function is normal. Half a thyroid gland is way more than you need to have normal thyroid function as long as that half is working. With your normal thyroid function, any doctor that would treat your "symptoms" with thyroid hormone is a fool; I hope you'd have a very hard time finding such a doctor. There is not a single symptom that is specific for hypothyroidism; urz not hypothy ...Read more

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I have hashimotos, on armour thyroid, tsh, ft3, ft4 is normal but antibodies are high. I have lots of symptoms. How can I get my antibodies down?

I have hashimotos, on armour thyroid, tsh, ft3, ft4 is normal but antibodies are high. I have lots of symptoms. How can I get my antibodies down?

Do not treat antibod: Hashimoto's is an autoimmune disorder of the thyroid. Although many people have hypothyroidism, they can have normal thyroid function initially, as you do. Your symptoms are not likely to be related to your thyroid. High thyroid antibodies are simply an indicator of having autoimmune thyroid disease, it has nothing to do with the course of the disorder. Trying to treat the antibodies will not help. ...Read more

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Can hypothyroidism be a reason for lot of weight gain for men? TSH, FT3,FT4 are they good indicators & do they need fasting for testing?

Can hypothyroidism be a reason for lot of weight gain for men? TSH, FT3,FT4 are they good indicators & do they need fasting for testing?

Yes, decent, no: Yes. Many who are hypothyroid have "normal" TSH, FT3 and FT4 but that is a good place to start. See http://tinyurl.com/pxz8mkd and http://tinyurl.com/koyamo5 for more on testing and diagnosis. ...Read more

Dr. Jeffrey Satinover
252 doctors shared insights

Free T4 (Definition)

T4 is the main hormone produced by the thyroid gland total T4 is amount in blood stream attached to albumin, as well as 'free' in blood stream. Free T4 is just the amount free in serum, ...Read more