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Doctor insights on: Blood Test Tsh 3rd Generation

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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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Rsults of my blood test indicate low LH and high TSH (3rd generation). What does this indicate?

Rsults of my blood test indicate low LH and high TSH (3rd generation). What does this indicate?

Hypothyroid: A high TSH is consistent with primary hypothyroidism. You should have a free T4 level done. Lh is unrelated to thyroid. A low level could be related to medications, such as an oral contraceptive or other estrogen usage (or testosterone in a male). If your periods are regular, it is likely a lab error. ...Read more

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Tsh 3rd generation blood test level is 3.442. T3 (liothyronine) total is 87. T4 total is 8.7. Free T4 is 1.01. Is this normal or do I have a thyroid problem? I'm ttc

Tsh 3rd generation blood test level is 3.442. T3 (liothyronine) total is 87. T4 total is 8.7. Free T4 is 1.01. Is this normal or do I have a thyroid problem? I'm ttc

Normal: Your thyroid function tests are in the normal range. See this site for more details. http://www.endocrine.niddk.nih.gov/pubs/thyroidtests/. ...Read more

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My cmp blood test says TSH w/reflex to f4 is 4.44 miu/l (normal range is 0.4-4.5). Do I have hypothyroidism? I have sparse eyebrows on the outer third

My cmp blood test says TSH w/reflex to f4 is 4.44 miu/l (normal range is 0.4-4.5). Do I have hypothyroidism? I have sparse eyebrows on the outer third

Not likely.: Tsh in "normal" range so not technically hypothyroid. Some would argue that TSH should actually be lower. I would repeat this in a few months. If normal again would stop worrying. If abnormal diagnosis is clear. In any case eyebrow thinning is not likely due to this tsh. ...Read more

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Should i fast for a TSH blood test?

No: Fasting for TSH is not necessary and will not change results. ...Read more

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What is TSH on a blood test indicative of?

What is TSH on a blood test indicative of?

TSH: Stands for thyroid stimulating hormone. It is a sensitive test to detect the functioning level of the thyroid gland. The brain produces TSH and that stimulates the thyroid to produce it's hormone. If the level of the TSH is high, it means the thyroid gland is under active. If the TSH is low, that indicates the thyroid is overactive. Your doctor should discuss your results and what needs to be done. ...Read more

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How quickly can a blood test show changes in tsh?

How quickly can a blood test show changes in tsh?

Depends on med: It depends on which type of medication, those containing T3 (liothyronine) will change the TSH quite rapidly whilet4 will take longer. Either way we usually wait at least a month to retest so that the result is stabilized to the current dose. Tsh changes in those not on medication will depend on the medical condition, if any, that is present. ...Read more

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What is a TSH blood test and why would i need one?

What is a TSH blood test and why would i need one?

TSH: Tsh, thyroid stimulating hormone (or thyrotropin), is made by the pituitary gland in the brain and signals the thyroid to make thyroid hormone. Tsh measurement is used as a screen to investigate thyroid function. ...Read more

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Is 0.45 low for TSH blood test? Have lots of symptoms.

Is 0.45 low for TSH blood test? Have lots of symptoms.

It depends: upon the lab, but that value is generally in the lower end of normal, and wouldn't account for any symptoms you are experiencing. Check w/ your doctor, ...Read more

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I'm 54, female. My blood test shows TSH 0.3. Do i need to do anything about it?

Depends.: Why was it done in the first place? Depending on the lab, it may be normal or low. If low, it needs to be repeated, along with other thyroid tests such as free t4. If the thyroid is enlarged, this TSH is consistent with early hashimoto or graves disease, but if it is normal in size, these diseases are very unlikely. ...Read more