Top
10
Doctor insights on: Low T4 Thyroid Hormone What Does This Mean

Share
1

1
How/Does Thyroid hormone production normally fluctuate along with female hormone cycle? Are you more likely to have hi/lower t4/t3 at certain times?

How/Does Thyroid hormone production normally fluctuate along with female hormone cycle? Are you more likely to have hi/lower t4/t3 at certain times?

There is: no "DIRECT" connection between thyroid gland output and t-4/t3 ratios and "female hormones" except that the BINDING of the hormone itself is altered by female hormone levels...This does not generally effect the end point of Thyroid Hormone effects (on growth, muscles and other tissues) Hope this helps! Perhaps a more specific question can generate a better answer! Dr Z ...Read more

Dr. Zahid Niazi
1 doctor shared a insight

Hormone (Definition)

A hormone (from greek ὁρμή, "impetus") is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Only a little amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from ...Read more


2

2
My T3 (liothyronine) is 101.80 ng/dl, T4 is 6.60 ug/dl, TSH is 1.460 uiu/ml. Is hypothyroidism still possible with normal thyroid hormone test results?

My T3 (liothyronine) is 101.80 ng/dl, T4 is 6.60 ug/dl, TSH is 1.460 uiu/ml. Is hypothyroidism still possible with normal thyroid hormone test results?

Normal: Your thyroid levels are normal. Despite what you may read on the internet or hear from "alternative" doctors, if your thyroid levels are normal, you do not have hypothyroidism. Don't let anybody tell you that normal is not normal. ...Read more

3

3
Is thyroid hormone the same as thyroxine?

Is thyroid hormone the same as thyroxine?

Thyroxine is a type: The thyroid gland secretes two types of hormones: thyroxine (t4) and triiodothyronine (t3), but it produces T4 at much higher levels than t3. When treating thyroid hormone deficiency, your physician may prescribe levothyroxine (which is oral tablet of t4), liothyronine (oral formulation of t3), or combinations of such, or even dessicated (dried) pig thyroid as replacement therapy. ...Read more

See 2 more doctor answers
4

4
So the internist said it wasn't necessary for my mom to increase her synthroid (thyroxine) dosage of 25 mcg because she has active thyroid hormone (T3) of 2.9. Do you agree?

So the internist said it wasn't necessary for my mom to increase her synthroid (thyroxine) dosage of 25 mcg because she has active thyroid hormone (T3) of 2.9.  Do you agree?

???: Usually we use TSH to titrate the synthroid (thyroxine) dose. There may be some confusion. Better double check with her internist. Good luck, your mother will be proud of you. ...Read more

5

5
I would like to know would the thyroid hormone levels be high or low after delivery in a woman?

I would like to know would the thyroid hormone levels be high or low after delivery in a woman?

Either way: There is a very common condition called "post partum thyroiditis". It can cause fluctuations in your thyroid function leading to both high and low hormone levels. Sometimes it requires medication, but sometimes it levels out on its own. You may need to consult with an endocrinologist. ...Read more

6

6
Can low thyroid hormone levels cause menopause?

Can low thyroid hormone levels cause menopause?

Not really: But hormones all do an intricate dance with each other and so thyroid dysfunction can definitely alter female hormone function and cause many symptoms which mimic menopause. Get your levels checked! ...Read more

7

7
Can low thyroid hormone symptoms like hair-loss be reversed?

Can low thyroid hormone symptoms like hair-loss be reversed?

Allopecia: If scalp hair loss called allopecia is due to hypothyroidism one can reverse it by normalizing thyroid function. Most of the time hypothyroidism is due to an autoimmune disorder called hashimotos disease. Allopcia is an accompanying autoimmune disorder and may not be due to low thyroid hormones. It's an association -- not causation. ...Read more

See 2 more doctor answers
8

8
Can low thyroid hormone symptoms such as hair loss be reversed?

Can low thyroid hormone symptoms such as hair loss be reversed?

Possibly/depends,,,,: This may be reversed depending on how severe and long-standing the thyroid issue is and how good a person's circulation is. Strict adherence to therapy would also help. ...Read more

9

9
Are thyroid nodules always thyroid cancer? I have a thyroid nodule and my levels of some thyroid hormone are low. My doctor wants to do more tests, but i don’t really understand what he said. Do I have cancer, or could it be something else?

Are thyroid nodules always thyroid cancer? I have a thyroid nodule and my levels of some thyroid hormone are low. My doctor wants to do more tests, but i don’t really understand what he said. Do I have cancer, or could it be something else?

Over : Over 95% of thyroid nodules are benign. Therefore the risk of cancer is low, but can be increased in younger or older people, people with a family history of thyroid cancer, or people who have been exposed to radiation (x-rays do not count). Sometimes benign thyroid nodules can secrete extra thyroid hormone, more than your body needs. If your doctor is suspicious of this, they will order a nuclear study called a thyroid uptake and scan. If a nodule is over a centimeter, that is when we usually will perform a fine needle aspiration to get a sample of cells in the nodule. If nodules are under a centimeter and there is no evidence of over activity, we can simply monitor with serial ultrasounds. ...Read more

See 1 more doctor answer
10

10
Do I need thyroid hormone if I have low free t3, (liothyronine) normal TSH and high tpo antibodies?

Do I need thyroid hormone if I have low free t3, (liothyronine) normal TSH and high tpo antibodies?

Possibly.: The TSH is normal so it might be a variation of normal or euthyroid. It also might be a developing thyroid condition, but there would be symptoms, like fatigue. The tpo antibodies might mean hashimoto's thyroiditis. This is usually associated with hypothyroidism. It would be wise to see your doctor to follow up. ...Read more

See 1 more doctor answer
Dr. Chad Levitt
13 doctors shared insights

Thyroid (Definition)

The thyroid is an endocrine gland that sits in the lower part of the neck. It produces thyroid hormone - which ...Read more


Dr. David Sneid
1,375 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more