Blood Test for Thyroid: What You Should Know about It

Blood test for thyroid is useful to check the activity of your thyroid gland. You should know that thyroid gland produces the kind of hormone that is important for the metabolism of our body. However, it can be dangerous if the thyroid gland is underactive or overactive. When the thyroid gland is underactive, it means it does not produce the hormone in a normal number. It is less than the normal one. On the contrary, if thyroid gland is overactive, it produces the hormones more than the normal number. To check whether your thyroid gland is normal or not, blood test is needed.

Blood Test for Thyroid: Hypothyroidism

Hypothyroidism is also known as the underactive thyroid glands. Blood test for thyroid is needed if you want to get the exact diagnose. When your blood is tested, the blood level is usually decreased. If hypothyroidism is still in early stage, then you should also need the stimulation of pituitary gland since the blood level may be still normal. Pituitary gland produces thyroid stimulating hormone. If there is the decreasing thyroid hormone, pituitary gland will react by producing even more thyroid stimulating hormone and it can be detected in your blood.

Blood Test for Thyroid: Hyperthyroidism 

Same with hypothyroidism, the early stage of hyperthyroidism is hard to detect. That is why you need blood test for thyroid. If the large amount of thyroid hormone is produced by the thyroid gland, then the pituitary gland will react by decreasing the production of thyroid stimulating hormone. It is meant to control the production of thyroid hormone. The less of thyroid stimulating hormone can be detected from your blood. That is why blood test for thyroid gland is needed to get the further and exact diagnoses.

If you are suspected having thyroid cancer, then blood test for thyroid cancer, or also known as thyroglobulin is needed. It is usually the name of the protein produced by cells of thyroid. If its presence is detectable, it can be the sign of the presence of tumor. You should know that this is different that the usual blood test for thyroid.

One thing you should know, if you have experienced the symptoms of thyroid abnormality, then it is the time for you to visit the doctor. It is better to detect the abnormality even from the early stage. Make sure you also have blood test for thyroid if it is necessary.

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