What could possibly prevent me from losing weight, im 34 f, on Synthroid (thyroxine) 137mcg, cytome 12.5mcg, metform 1000, phenter, free t4/t3 upper range, TSH low?

Eating too. Much and not exercising enough. If you're on cytomel, (liothyronine) you should consider stopping it as it can be dangerous and can't be checked by the routine thyroid tests. That's probably why your TSH is too low. The T3 test doesn't accurately measure Cytomel (liothyronine) dose.

Related Questions

On 25mcg synthroid, (thyroxine)TSH reduced frm 4.67 to 2.61 in18 days. So decided 2 try to conceive. Levels 12 days later-TSH 4.57; Free T4 1.2; T3 103.Whts d prob?

Thyroid replacement. 25 mcg is a very low dose. It appears that such a low dose did not really affect your TSH. 4.67 to 2.61 could be just random lab variation. Your baseline TSH of 4.67 is very close to normal. If the goal is to lower TSH, you may need a higher dose, but talk to your doctor. 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...

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...

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...