Inhoudsopgave
Wat zijn normale T4 waarden?
Normaalwaarden
| TSH | 0,4 – 4,0 mU/l |
|---|---|
| T4 | 64 – 154 nmol/l |
| FT4 | 8 – 26 pmol/l |
| T3 | 1,2 – 3,4 nmol/l |
| FT3 | 3 – 8 pmol/l |
Wat doet het T4 hormoon?
T4 (thyroxine), T3 en TSH De schildklierhormonen T4 en T3 beïnvloeden de snelheid waarmee lichaamscellen werken. De afgifte van deze hormonen werkt volgens een mechanisme dat vergelijkbaar is met dat van een centrale verwarming: de hypothalamus is de thermostaat die het gehalte schildklierhormoon in het bloed bewaakt.
What is the normal range of free T4?
Normal levels of free T4 range from 0.8–1.8 nanograms per deciliter (ng/dl) of blood. Normal T4 levels also vary across trimesters of pregnancy. A 2011 study in the Journal of Thyroid Research…
What is a normal free T3 and TSH level?
Optimal Results High Results Free T3 levels in the normal range indicate normal thyroid function and is usually accompanied by normal free T4 and normal TSH levels. A normal free T3 level with a low TSH level might indicate subclinical hypothyroidism. A normal free T3 level with an elevated TSH level might indicate subclinical hyperthyroidism.
How do I know if my T4 level is normal?
A healthcare provider can use two blood tests to determine whether a person’s T4 levels are within a normal range. A total T4 test detects levels of both bound and free T4, while a free T4 test only identifies free T4 levels. A healthcare provider may also recommend a TSH test to assess thyroid function.
Can cytomel cause low free T4 levels?
Taking T3 only thyroid medication like Cytomel or liothyronine will cause your free T4 to drop below the “normal” range completely and even flag as low. This has to do with the fact that you are suppressing the TSH with the T3 and so endogenous production of T4 decreased dramatically.