I am 39yrs taking thyroxine 100mcg 1 tab since 5 years. Now TSH 0.22 miu/ml., total t3, (liothyronine) T4, freet4, ft4 (serum) are normal. Which medicine should I take?

Thyroxine dose. Was your TSH normal before, and now it is low? Over the years, your dose requirements for thyroxine can change, which is why a TSH should be checked periodically. Another possibility: the brand of thyroxine changed. Pharmacies sometimes switch people between different brands to save a few pennies, and there are difference in bioavailability which can affect tsh.

Related Questions

Dx with multinodular goiter. But T4, free t4, total t3, (liothyronine)tsh, & Tpo ab normal. Tg ab test is high @ 2.3 Iu/ml. Range 0-0.9. Would this cause hypo symptoms?

Not likely. 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 have all the data. From what you presented, you are not hypothyroid, but are at risk for it. Please follow your doctor's advice. Read more...

Person with normal Total T4, T3 (liothyronine) Uptake, FTI, Ultrasensitive TSH but LOW Total T3 (liothyronine) (63.55 ng/dl) = Synthroid dose needs to increase?

It's OK. Hi. Your TSH is "normal", but I'd shoot for a value on therapy generally around the 1.0-1.5 range. The total T4, T3 (liothyronine) resin uptake, and FTI are prehistoric tests no one in the thyroid field has used for years. Your body regulates conversion of T4 to T3 (liothyronine), so your T3 (liothyronine) should be just what the body ordered. Your T3 (liothyronine) is close to the normal range; if you repeat it it's likely to be within normal range. Read more...

My thyroid numbers: TSH 3.38 mcIU/mL Free T4, 1.06 ng/dL Free T3 2.8 pg/mL Reverse T3 15 ng/dL My son's on synthroid (thyroxine). But are MY numbers optimal?

Interesting question. Optimal is a interesting question. First it is important to understand where "normal" is derived. "Normal" ranges for each lab is a statistical number that tell where a population of "normal" people results run. So your numbers run within the "normal" (reference) range for most laboratories. Are your results "optimal" is a question that is thus difficult to answer! Read more...

T3 (liothyronine) uptake and T4 thyroxine and free T4 index are normal, but TSH is4.65 and per the lab that is high. The highest normal is 4.5. What does this mean?

Subclinical. Lab results are consistent with a diagnosis of subclinical hypothyroidism representing very mild and early case of hypothyroidism. I would recommend repeating your blood test first. If these results are confirmed many doctors would recommend thyroid replacement although there is some controversy about the need for treatment. If no treatment thyroid function test should be rechecked in the future. Read more...
Once - Nothing! Any symptoms? Sublinical hypothyroid or nothing. This is an odd combo of tests as T4 & FTI essential measure the same thing. Your TSH is just above normal & there is sometimes variability in the test. I would suggest, repeat testing by an endocrinologist about 2 weeks after this one, with antithyroid antibodies. If (+) closer monitoring, if (-) less close f/u. Fam Hx also important. Don't worry! Read more...

Female 48 severe me/cfs hypertensive. Tsh 7.20 (0.2-4.0) free T4 11.9 (9.0--19.0). Would thyroxine or a mixed T3 (liothyronine) T4 maybe help? Repeat test 3 mnth.

Levothyroxine. An elevated TSH indicates hypothyroidism. Not sure what me/cfs means. Treatment of hypothyroidism is levothyroxine. In the US the best preparation is Synthroid. I avoid thyroid extract or Armour thyroid. Rarely is Cytomel (liothyronine) needed which is T3. Take enough thyroid hormone to get you THS below 5. Read more...
Prob not. I'm not sure what "me/cfs" means. Your TSH is elevated, but your free T4 is normal. This condition is called subclinical hypothyroidism. You may develop full blown hypothyroidism in the future (which is why the test is being repeated in 3 months) but you may have symptoms of it already. T4 *is* thyroxine, but only the free part is active. I don't see the point of mixed T3/T4 or total T4 right now. Read more...
Check Iodine levels. Your TSH is elevated and the FT4 is in the lower quartile of normal values. Chronic fatigue syndrome could be due to frank hypothyroidism and Iodine deficiency or Hashimoto`s. I would like to see the levels of FT3 and a 24 hours urine collection for Iodine and Fluoride. I would treat you with Iodine if it is low in the urine collection and with Thyroid medications if Iodine is normal in urine. Read more...