Min ft4 er da veldig veldig stabilt på alle målinger, for noe tull at den er 0 eller 4, og de tall fins jo ikke....for en tulling.

Her er noe som bekrefter det du sier og jeg sier:
http://www.ncbi.nlm.nih.gov/pubmed/1366242 som betyr at det er veldig mange har lav TSH med normal ft4 og uten overdosesymptomer blant annet. Det er siden ikke gjort noen lignende undersøkelse, elelr så har det gått meg hus forbi.
men i linkene som medline har derfra er det:
http://www.ncbi.nlm.nih.gov/pubmed/16807224

"Furthermore, in the USA the Colorado Study demonstrated that 40% of patients receiving thyroid hormones had abnormal [corrected] TSH levels (i.e. lower than 0.3 or higher than 5.1 mU/L); of these, 0.9% had hyperthyroidism and 20.7% subclinical hyperthyroidism [corrected] These facts render exogenous SubHyper an everyday problem for the endocrinologist. Exogenous SubHyper differs in many aspects from endogenous, its principal difference being that it is an iatrogenic thyroid disorder induced by the endocrinologist. The management of exogenous SubHyper relies on appropriate adjustment of T4 dosage taking into consideration a) individual requirements in T4, sex, age and the presence of cardiovascular disease or other co-morbidity, b) the recognition that small changes in serum FT4 have a logarithmic effect on TSH, c) the variability of FT4-TSH interactions between individuals, d) the instability of T4 preparations and its bioavailability, and e) the values of serum FT4 and FT3 that accompany a suppressed TSH. This last parameter is of importance since it is the free thyroid hormones values in the serum that generate and reflect the thyroid metabolic state of the organism rather than the degree of TSH suppression.
"
(jeg får ikke matematikken helt til å gå opp her men det er altså minst 20% som får lav TSH med normal ft4 og ft3. Jeg har hørt 30% eller en tredel andre steder)



http://hormones.gr/preview.php?c_id=144

"The question, therefore, arises as to which parameter should be taken to indicate tissue thyrotoxicity and consequent harm to the organism: the degree of TSH suppression or the corresponding levels of FT3 and FT4? Until this issue is satisfactorily scientifically addressed, the practicing physician is justified in feeling that FT3 and FT4 concentrations around the middle of the normal reference range are fairly reassuring of a normal thyroid metabolic state in spite of the presence of a low TSH which may remain suppressed long after reducing the dose of thyroxine.This seems to be the position of 185 members of the American Thyroid Association who were asked to express their opinion on the management of 4 hypothetical cases of different ages with endogenous Hyper presenting T3 and T4 values in the middle of normal range and TSH 0.2-0.3 mIU/L or undetectable. It was obvious that the clinical judgment of the thyroid specialists is based on the normal T3 and T4 rather than the suppressed or even undetectable TSH."