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Doctor insights on: What Does Tsh Blood Test Show

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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

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

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

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Can you still have thyroid problems that the basic TSH blood test doesn't show? Is the full TSH blood panel better?

TSH and freeT4: Tsh and free T4 should be able to diagnose most thyroid problems, at least those related to function. Other tests are needed or helpful for other thyroid disorders, such as thyroiditis, cancer, etc. ...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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My blood test shows normal tsh. Does this mean the rest of my hormones like estrogen/ Prog r most likely balanced?

My blood test shows normal tsh. Does this mean the rest of my hormones like estrogen/ Prog r most likely balanced?

Not necessarily: No, the thyroid operates within it's own system. It is true though that your entire body needs adequate amounts of thyroid hormone to function normally. Just because you have normal thyroid levels does not necessarily mean you are ovulating and having regular menses (which implies normal estrogen/progesterone levels). Most menopausal women have normal thyroid levels and yet very low estrogen/P4 ...Read more

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Blood test shows TSH w/ reflex to FT4 is 13.62 (high) & Free T4 is 1.1 (normal). How would you describe what these results mean?

Blood test shows TSH w/ reflex to FT4 is 13.62 (high) & Free T4 is 1.1 (normal). How would you describe what these results mean?

Thyroid tests: 26F US had TSH 13.6 and Ft4 1.1. Asks: How could you describe what these results mean? ANS: Need 2 know lot more about U which ur Drs already knows so better to ask them. Such as 1. U on BCP? 2. Why was test done? 3. Hx of thyroid problems n past? 4. Taking thyroid meds? 5. Pregnant? As TSH is high, u did not give normal lab range for FT4 but it seems lowest range of normal. Hypothyroid? ...Read more

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If your tsh was 0.250 with first test abdominal scan shows you have a goiter and a cyst on your thyroid but the second blood test tsh now 0.612?

If your tsh was 0.250 with  first test  abdominal scan shows you have a goiter  and a cyst  on your thyroid  but the second blood test tsh now 0.612?

Thyroid.: TSH can vary slightly as in your case. On average your TSH seems pretty normal. Might want to repeat this in a few months. Mild goiter and cyst on thyroid may be related - maybe not. Depends on size and appearance. You should f/u with the doc who ordered the study. ...Read more

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