Why get tested?
The TSH test helps diagnose hyperthyroidism and hypothyroidism which are among the most common thyroid gland disorders.
What is being tested?
TSH test measures the TSH hormone levels in a blood sample. This hormone is secreted by a gland present below the brain region called the pituitary gland. The function of the TSH hormone is to regulate the activity of the thyroid gland. The thyroid gland secretes important hormones and pours them into the bloodstream. The two essential hormones produced by the thyroid gland are thyroxine and triiodothyronine.
The thyroid gland synthesizes the TSH hormone, hence the TSH test analysis the activity of the thyroid gland.
Thyroid hormones regulate metabolism, the storage, and the release of energy within the body.
TSH affects weight gain or weight loss as it impacts the burning of calories & metabolism in the body.
It also affects brain & bone development as well as the digestive function in the body.
TSH levels regulate the body temperature, increasing and decreasing it.
TSH affects the cholesterol level, rate of heartbeat, and blood pressure. An excess of thyroid hormone in the body increases heart rate. Thus, an increase in heartbeat is one of the symptoms of hyperthyroidism.
No. But fasting can be required if the healthcare provider has prescribed other blood tests along with the TSH test.