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Doctor insights on: What Does A Low Tsh 3rd Generation Mean

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What does a low TSH level mean?

What does a low TSH level mean?

Need to look at T3 (liothyronine): And free t4. Low tsh, depending on the sensitivity of the assay, indicates thyroid hyper-function. However, the suspected hyperthyroidism needs to be confirmed with high levels of T3 (liothyronine) and free t4. All lab tests need to be evaluated in the clinical context and it would be prudent to take up the issue with your doctor. ...Read more

Dr. Quang Nguyen
938 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 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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What does it mean if I have low TSH and low freet4? Both. 6

What does it mean if I have low TSH and low freet4? Both. 6

It depends: Are you taking thyroid hormone? If yes, it changes how the tests are interpreted. If you are not on thyroid medication, a low free T4 and low TSH can indicate a pituitary disorder. ...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 when you have a low TSH but you also have a low t4?

What does it mean when you have a low TSH but you also have a low t4?

Thyroid labs: Hi. See an endocrinologist. Make sure it's a free T4 (not a TOTAL T4). If you have low TSH and a low free T4, that's compatible with pituitary disease causing hypothyroidism (so called "secondary hypothyroidism"). IF you have that (not saying you do), you need to be checked for pituitary problems and other pituitary deficiencies (adrenal, most promptly); If u have secondary hypothy, CHECK ADRENALS ...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 does it mean if my T3 (liothyronine) is low? TSH and T4 totals are normal.

What does it mean if my T3 (liothyronine) is low? TSH and T4 totals are normal.

Nothing: First how low is low.

generally T3 (liothyronine) alone does not mean anything. Specially with normal TSH, and T4

that mean your thyroid is functioning well.

check with your doctor. ...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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Could a low TSH but normal Free T4 mean a Pituitary problem? Or would that be more indicative of the start of Hypothyroidism?

Could a low TSH but normal Free T4 mean a Pituitary problem? Or would that be more indicative of the start of Hypothyroidism?

Sounds normal: Your description is consistent with normal thyroid function, but if you are concerned, you could provide exact numbers for us to review. ...Read more

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I am diagnosed with low TSH and normal T3 and T4 level...What does it mean? Please suggest me treatment...

T3 and T4: A low TSH should not affect your thyroid glands!
If you are having a problem please see an Endocrinologist. Should not be necessary. ...Read more

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Can Lamotrigine (Lamictal) affect TSH levels? Also, what do low TSH mean (if T3 (liothyronine) and T4 are normal)?

Not alot: Thyroid interaction is not common with Lamictal, however as with all medications for each individual that can be a possibility. As to your low TSH that is usually a resonse to elevated T3, (liothyronine) T4. Remember that there can be variations in your thyroid measurements from one time to another. How do you feel. Do you have thyoid symptoms: cold, tired, fatigued, skin or nail changes? ...Read more

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I have hypothyrodism. Taking eltroxin 100. what does it mean to have T3 (liothyronine) and T4 in normal range while having a low TSH? 0.22

Good control!: Those figures sound swell. The normal range for both circulating thyroid hormones plus a low TSH (= Thyroid stimulating hormone) from your pituitary gland the "controller" at the base of your brain means the medication is being given in the correct dose!! Its good news! ...Read more

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Does low TSH mean I have a problem with my pituitary gland? Hypopituitarism? My free T3 (liothyronine) and T4 are high normal???

Does low TSH mean I have a problem with my pituitary gland? Hypopituitarism? My free T3 (liothyronine) and T4 are high normal???

Low TSH: May reflect Hypopituitary condition if FT4 and FT3 are low also. However if both are high that will indicate Hyperthyroidism. Discuss with your doctor about other modifers like acute illness or medication effects or pregnancy on your thyroid panel result ...Read more

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Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Means pituitary is: A TSH of 0.28 with normal free T4 and free T3 (liothyronine) likely means the pituitary is working properly. A TSH of 0.1-0.4 is lower than the reference range, which means about 2.5% of normal people have a TSH or 0.1-0.4. Thus, one hopes she is normal. Her endocrinologist can follow and recheck her levels in 4-6 weeks to confirm that her levels are stable (TSH not dropping lower; T4 or T3 (liothyronine) not above normal). ...Read more

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I'm complement deficient. What does this mean? Low C3 and c4. joint pain, low back pain, rashes, anisocoria, low tsh, fatigue etc and it's not lupus

I'm complement deficient. What does this mean? Low C3 and c4. joint pain, low back pain, rashes, anisocoria, low tsh, fatigue etc and it's not lupus

Likely secondary: You probably has an autoimmune condition which is consuming the complements thus accounting for the low levels. Have you seen a rheumatologist? If so, you need to rush to find one. ...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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What can be the cause of low testostorone and low TSH count?

What can be the cause of low testostorone and low TSH count?

Central: If this is hypothyroidism, low TSH and low testosterone together may have a hypothalamic/hypopituitary etiology. Please discuss this with your physician. You may need a work-up for other pituitary hormone deficiencies. ...Read more

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Can you have hyperthyroidism without a low tsh?

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 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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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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Can you tell me is 23.69 a high or low TSH level?

High: The normal range for a TSH usually is up to 4.5 for most labs. This is a higher than normal number. ...Read more

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Due to thyca can you have low TSH and high tg? Or if tg increases does the tsh?

Low TSH unlikely: Thyroid cancer usually does not cause a low TSH (unless you are taking thyroid hormone). Most thyroid cancers do not function as well as normal thyroid tissue. Elevated thyroglobulin is a nonspecific finding, seen in most disorders of the thyroid. It can serve as a tumor marker for recurrent thyroid cancer as long as the thyroid has been completely removed. High tg has nothing to do with tsh. ...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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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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Hair loss secondary to low tsh?

Hair loss secondary to low tsh?

Generally low: Tsh will lead to an increased tendency for hair to break due to poor protein in the hair shaft, but it's not true hair loss. It will restart growing normally when your hypothyroidism is correctly treated with the right dose of brand name T4 replacement. ...Read more

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What causes low TSH, low T4 and low T3 (liothyronine)?

See below: All laboratory 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. Having said that, it would have helped to know the actual values. Even though all these parameters may be low, these may yet be in the normal range. ...Read more

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Stress can increase tsh, but how high cortisol causes low TSH where as stress causes high cortisol production.?

Stress can increase tsh, but how high cortisol causes low TSH where as stress causes high cortisol production.?

Cortisol: This is a very complex system. In very basic terms cortisol is produced in response to stress and feeds back inhibiting production of itself (inhibiting crh and acth). Cortisol also inhibits TSH production (as well as growth hormone, estrogen, testosterone and lh production). Thus limiting the response to stress. It is though in chronic stress this feedback mechanism breaks down. ...Read more

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27 yrs old. This years blood work showed: Low TSH, and total T-3 and free T-4 are both high. Last year's test were fine. What could thus indicate?

Mild hyperthyroidism: Unless you are taking thyroid medication (and taking too much) this could mean mild hyperthyroidism. If your doc measured TSH, FT3 and FT4, (s)he must have suspected something. Most likely cause of hyperthyroidism in a 27 yo woman is Graves disease or one of several forms of thyroiditis. You may need to see an Endocrinologist. ...Read more

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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