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Doctor insights on: Graves Low Tsh

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Dr. Quang Nguyen
943 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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What can cause low TSH of its not a Thyroid or pituitary problem? 0.01 TSH T3 (liothyronine) and T4 free normal, graves and hasmitos negative

What can cause low TSH of its not a Thyroid or pituitary problem? 0.01 TSH T3 (liothyronine) and T4 free normal, graves and hasmitos negative

2 possibilities: Hi. First of all, Hashimoto's doesn't cause a suppressed TSH, and YES, your TSH is SUPPRESSED, not "low", because your free T4 and total T3 (liothyronine) are "normal". A low TSH (pituitary defect) would cause low free T4 and possibly/probably low T3 (liothyronine). The most likely is a "hot" thyroid nodule (autonomously hyper-functioning); second most likely would be a phase of subacute thyroiditis. Follow over time to tell. ...Read more

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What could cause hyperthyroidism if it's not graves, hasmitos, pituitary problem? I have low TSH 0.01 but normal free T3 (liothyronine) and T4 and normal total t3t4

What could cause hyperthyroidism if it's not graves, hasmitos, pituitary problem? I have low TSH 0.01 but normal free T3 (liothyronine) and T4 and normal total t3t4

Already answered: Hi. I already told you: hyper-functioning ("hot") thyroid nodule is most likely, but a phase of subacute thyroiditis (ST) is certainly a possibility. Following thyroid function over time, or a 123-I thyroid scan (and uptakes) would tell the difference. This all assumes you're not surreptitiously TAKING thyroid hormone (which would look like ST, but unlike ST would have a suppressed thyroglobulin). ...Read more

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When taken off thyroid meds and your TSH is low and you have graves disease does it throw everything out of wack?

When taken off thyroid meds and your TSH is low and you have graves disease does it throw everything out of wack?

It depends: A low TSH indicates that your thyroid level is high. Graves disease is the most common cause for an overactive thyroid. I assume the medication you had been taking was to bring down your thyroid level. If the TSH had been normal on medication, and is now low off medication, it means that the graves disease is still active and the thyroid level is becoming overactive again. ...Read more

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My TSH is low normal. T3 (liothyronine) is normal. T4 is a little high. My tsi is low normal. Could I have graves' disease?

Not likely: The lab parameters you describe are not consistent with graves disease. It would be prudent to discuss the matter with your doctor as all lab tests need to interpreted in the context of history, physical findings, imaging and other lab findings. ...Read more

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My TSH is low, my T3 (liothyronine) and T4 is high. I don't have graves disease or thyroiditis. My dr. Suggested a partial thyroidectomy to correct this. Is that ok?

An overactive: Thyroid can also be treated successfully with either radioiodine or anti-thyroid drugs and avoid the potential risks and dangers of surgery. Talk it over with your doctor, and even consider getting a second opinion before making your decision. ...Read more

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Graves and RAI 12 years ago. 125mcg synthroid (thyroxine). All levels normal. 6 years ago TSH dropped to 0 and Free T3 & T4 low normal. TSH won't increase?

Graves and RAI 12 years ago. 125mcg synthroid (thyroxine). All levels normal. 6 years ago TSH dropped to 0 and Free T3 & T4 low normal. TSH won't increase?

How do you feel?: This is really the question to be asking. Whoever is managing you may feel a need to lower your dose slightly to see if TSH rises / protect you from osteoporosis later in life / practice defensive medicine, but I'd be most concerned with how you actually feel. If you don't recognize symptoms / signs of hypothyroidism / hyperthyroidism, perhaps doing what's working is best. ...Read more

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Tsh in range. Normal t3 high ft4. Negative antibodies for graves and Hashi. Low b12 lower vit D. Normal prolactin level. Endo believes it’s pituitary?

Tsh in range. Normal t3 high ft4. Negative antibodies for graves and Hashi. Low b12 lower vit D. Normal prolactin level. Endo believes it’s pituitary?

2nd opinion: High T4 points more to hyperthyroidism. If it is a pituitary issue, the TSH should be elevated. What kinds of symptoms do you have since the low B12 level is suggestive of an absorption problem unless you are a strict vegan. ...Read more

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Can you have low TSH with Hashimoto's (antibodies are present)?

Yes, transiently: Hashimoto's thyroiditis can go through a phase of thyroid hyperactivity early in the course of disease and that would be associated with low TSH. Sooner or later enough thyroid is destroyed that thyroid functions declines and TSH rises. ...Read more

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I have normal ft4 (12.3) and low TSH (0.005), do I still have hyperthyroidism?

I have normal ft4 (12.3) and low TSH (0.005), do I still have hyperthyroidism?

No: Not if those values are within the lab's stated and assayed normals, and if your not on any medication to lower active thyroid hormones. ...Read more

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My 19 year old son has labs showing low TSH but normal free t4. What could that indicate?

My 19 year old son has labs showing low TSH but normal free t4. What could that indicate?

Depends: On the level of tsh. If TSH level remains in the range 0.2-0.6, he is at very low risk of developing hyperthyroidism. Retesting is not recommended. ...Read more

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Could a successful 20 year old hodgkins chemotherapy recovery cause hypothyroid with a low TSH production?

May be: It would not be practical to link the two conclusively. Hodgkins does affect the immune system and a common cause of hypothyroidism is hashimoto disease, due to autoantibodies to thyroid. The treatment would be the same irrespective the cause. ...Read more

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What does low TSH 0.2 with normal free T4 mean? What is its treatment and does it need to be taken all life long?

Likely normal: Your TSH may be slightly low and may be normal for you. Do you have any symptoms? It is generally not a good idea to treat lab values. All lab results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. It is likely that you need no treatment, however, it would be prudent to follow your doctor's advice for follow up tests. ...Read more

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Can a low TSH completely prevent pregnancy? Not extremely low but median low. Can the medication alap have an effect? Thanks in advance

Can a low TSH completely prevent pregnancy? Not extremely low but median low. Can the medication alap have an effect? Thanks in advance

Thyroid problem: Decrease TSH may be a result of primary disease of pituitary gland causing secondary hypothyroidism or it may be a consequence of negative feed back of elevated thyroid hormone (T4) in thyrotoxicosis. Both may (not always) cause infertility or menstrual cycle abnormality. After treatment, hormone levels return to normal and pregnancy is achieved more easily. ...Read more

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What does low TSH mean?

What does low TSH mean?

ThyroidStimulatingHo: Thyroid stimulating hormone.
It is secreted by pituitary gland to make your thyroid gland produce thyroid hormone. ...Read more

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Could rhodiola cause low TSH levels?

Could rhodiola cause low TSH levels?

Unlikely but...: Rhodiola is known to improve thyroid function and thus might be expected to reduce TSH levels somewhat (though more research on this is needed). However, a low TSH tends to be a sign of hyperthyroidism and, as far as I know, rhodiola is not known to stimulate the thyroid to the point of hyperthyroidism. ...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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Having heel pain since one year, low TSH?

Having heel pain since one year, low TSH?

Unrelated: Heel pain is not a symptom of thyroid disease. When you say low TSH, do you mean in the range of 0.1-0.4 or less than 0.1? A slightly low TSH of 0.1 to 0.4 is usually a benign normal variation whereas a TSH of less than 0.1 could be a sign of an overactive thyroid which would require further testing and possibly treatment. ...Read more

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Low TSH high free t4? What is the cause?

Low TSH high free t4? What is the cause?

Hyperthyroidism: High ft4 and low TSH are a combination usually indicating an over active thyroid. It doesn't explain the cause which will require further testing to figure out. ...Read more

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Can you have hyperthyroidism without a low tsh?

Yes: If the problem is in the pituitary or hypothalamus, you can have high tsh, high ft4 and high ft3. This is very rare but can happen. ...Read more

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What does borderline low TSH and T3 (liothyronine) mean?

What does borderline low TSH and T3 (liothyronine) mean?

Nothing usually: Borderline is still within the normal range. Ask the physician who ordered the test why he got both and what his/her interpretation is. ...Read more

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What could be the reason for a low T4 and low TSH on the bloodwork?

What could be the reason for a low T4 and low TSH on the bloodwork?

How low?: If these were taken during a time that you were emotionally distraught, and they are not strikingly removed from the reference range (which is set so that several percent of healthies fall outside), your physician will repeat them when your life gets better. If way-low, pituitary disease is a concern. ...Read more

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Does medication for low TSH hyperthyroidism cause you to gain weight?

Does medication for low TSH hyperthyroidism cause you to gain weight?

Thyroid and weight: As the medication (eg. Methimazole) normalizes your thyroid levels, your metabolic rate will return to normal. Your appetite, however, may still be in hyper-mode. Weight gain is common, but if you take care with what you eat you can minimize this. ...Read more

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What does a low TSH score of. 08 indicate? I have been takin levothyroxin for 9 years and my last blood test shows a TSH score of. 08.

What does a low TSH score of. 08 indicate? I have been takin levothyroxin for 9 years and my last blood test shows a TSH score of. 08.

Too much levothyrox?: That result is below the usual target of 0.5-5, indicating that there may be too much T4 (levothyrox) in your system. 1. the doctor who prescribes your T4 should determine whether a dose reduction is needed. 2. if you are feeling well, the first thing to do may be to repeat the test. 3. after 9 years, it is possible that your T4 requirement has indeed gone down and your dose should be lowered. ...Read more

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Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low TSH is why it was prescribed. Dose. 050mcg.

Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low TSH is why it was prescribed. Dose. 050mcg.

Synthroid (thyroxine): You must mean a borderline high TSH for an underactive thyroid. Anyhow, the thyroid does not revert back to its normal level on its own, it ages with us and needs frequent monitoring, I would suggest not to stop it, but this is something you need to discuss with your doctor who knows you best. ...Read more

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Struggling with very low TSH 0 01 for 1 yr. Compliant with levo although doc keeps lowering it. No supps etc that would cause malabsorption. Ugh!

Over replaced: As your TSH is low and you're having symptoms of hyperthyroid (i presume), the answer is simply that your dose is too high. Dropping it carefully, as your doctor is doing, should work to bring your levels back in to control. (low TSH = high thyroid). ...Read more

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How can I address benign thyroid nodules and low tsh?

How can I address benign thyroid nodules and low tsh?

Need further eval: The low TSH needs to be addressed as it can cause problems for you. In the presence of thyroid nodules, you will need a thyroid uptake and scan to make sure the nodules are not producing too much thyroid hormones. Treatment then would be antithyroid drugs, radioactive iodine, or surgery. You should not be doing nothing with a low tsh. ...Read more