Thyroid Function Tests: Procedure, Side Effects, and Results

The thyroid is a specific endocrine gland that is located at the base of the lowerpart of the neck. The Thyroid gland plays a crucial role in regulating different body procedures, including energy generation, growth, development of the body, mood and even metabolism. 

So, to ensure the smooth operation of your thyroid gland, you should opt for a thyroid test. The thyroid gland mainly produces two main hormones that are T3 or Triiodothyronine and T4 or Thyroxine.

However, if your thyroid gland cannot produce the required amount of T4 or T3, you may have hypothyroidism. In the case of hypothyroidism, you may experience symptoms like:

  • Depression
  • Lack of energy
  • Weight gain

On the other hand, if your thyroid gland starts producing too many hormones, you may experience symptoms like:

  • Tremors (involuntary trembling or shaking)
  • High levels of anxiety
  • Weight loss, etc.

This health condition is known as hyperthyroidism. Thus, to find out the issue with your thyroid gland, your doctor may suggest you take broad screening tests or thyroid test, along with informing you of the thyroid test price.

The procedure of thyroid test

It is crucial to inform your doctor about any medications you are taking that can affect the result of your thyroid test. You should also inform your doctor if you are pregnant, as this can also affect the results of your thyroid function test.

  • Preparing for the test

There is nothing special to preparing for thyroid function tests. You just need to fast for several hours before offering your blood for conducting a thyroid test. Your medical professional will instruct you if you need to follow any special instructions. Otherwise, there is no specific instruction to follow.

  • Drawing blood

Before you opt for a blood draw to check your thyroid function, you need to talk with your doctor and inform him about the medications you are taking. A venepuncture or blood draw is mainly performed in a lab. 

A healthcare professional will tie a rubber band around your upper arm tightly and draw blood from an appropriate vein with the help of a needle.Then the professional will collect the blood in a test tube and send it for lab analysis. Lastly, they will put a small bandage over your wound.

Thyroid test: Side effects

Usually, the procedure of drawing blood to test your thyroid function does not have many side effects. After the blood draw, you will notice a little bruising or sore feeling in that specific area where your wound is. 

You can put an ice pack on your wound or can take an over-the-counter pain reliever to ease your discomfort. However, if you see that the area around the wound has become swollen and red, you can consult your doctor.

Thyroid test: Results

As mentioned earlier, the thyroid gland produces two types of hormones, T3 and T4. There are mainly two types of tests, i.e., the TSH test and the T4 test. The TSH test is done first because it can initially test a thyroid gland’s function. 

This test can determine if a person is suffering from hypothyroidism or hyperthyroidism. The other test, or the T4 test, is also known as the thyroxine test. A high level of this T4 hormone indicates mainly hyperthyroidism. 

Thus, the TSH test can measure the level of the thyroid-stimulating hormone in your blood, whereas a high level of T4 indicates hyperthyroidism. 
Therefore, whenever you feel like you are suffering from thyroid issues, you should opt for a thyroid test that includes both TSH and T4 tests.

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