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A member asked:
This is my lab result free t3 (liothyronine) 4.58 free t4 13.74 tsh 8.45
A doctor has provided 1 answer
Thyroid labs: Hi. I am assuming those labs are in SI units, in which case your free T4 and free T3 (liothyronine) are in the normal range and your TSH is elevated. This is "subclinical hypothyroidism", meaning your thyroid is damaged, but with a little extra "push" from the pituitary, the struggling gland can still make normal levels of T4 and T3 (liothyronine) (most T3 (liothyronine) is made from T4 OUTSIDE the thyroid gland). Repeat labs and check Ab's
Answered 9/23/2014
3.7k views
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On 2 grains of armour, r my new labs (tsh)ok Tsh .006 T4) 6 Uptake T3 (liothyronine) -27 Free T4 index- 1.6 Triiodothyronine, free, serum -3.4 t4) free,direct- 1?
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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?
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I have a TSH of 0.10l and the lab slip says it is out of range. My T4 is 0.9 and my T3 (liothyronine) is 3.2. The T4 reagent produces results 9 percent higher. What does this all mean?
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I had a total thyroidectomy due to cancer. my lab shows low tsh but t4 and t3 (liothyronine) levels are normal indicating correct dosage why would my tsh be low?
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