Thyroid values: TSH level (TSH basal)

21 October 2017

The TSH level is usually a so-called "basal TSH" certainly. "basal" means that the release of thyroid stimulating hormone (TSH) prior to the determination Not by a stimulation method (such as a TRH test) has been suggested. When TRH test, the doctor administered the hormone TRH (TSH releasing hormone, also called thyrotropin or thyroid stimulating hormone), which stimulates the release of TSH.

TSH is the Pituitary gland (Pituitary) produced and released into the blood. About the bloodstream it reaches the thyroid gland, where it the production of thyroid hormones increases and their distribution in the blood promotes.

If the TSH level Not in the reference area, the concentrations of are T3 and T4 measured. Often the doctor determined by default all three thyroid levels (basal TSH, fT3, fT4).

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Of the Reference range for TSH levels lies by 0.4 to 4.5 uU / ml. For children and adolescents higher TSH reference ranges apply. In addition, the TSH value fluctuates during the day - in the afternoon it is mostly low and then rises in the evening or at night. This must be taken into account in the measurement.

If all three thyroid values ​​are present, the doctor can determine if it is a Slight (latent) or pronounced (manifest) Trouble is:


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