Do I need to fast for the five thyroid function tests?

Thyroid function is an extremely important organ function and is the basis for maintaining people's health. Once there is a problem with thyroid function, it will cause diseases to people and destroy their lives. Modern medicine advocates physical examinations, which include examinations of the five thyroid function items, which can diagnose the status of thyroid function in advance. Is it necessary to fast when testing the five thyroid function items? Let’s take a look at the explanation below, I hope everyone can understand it.

People do less exercise in the morning, but due to the influence of relatively high amounts of exercise such as eating, labor, exercise, and work, some laboratory indicators may fluctuate, which is not conducive to the relative stability and accuracy of the measurement results, nor is it conducive to comparison with previous results.

The five thyroid function tests include: 1. Free triiodothyronine, or FT3. Increased levels may be seen in hyperthyroidism, while decreased levels may be seen in hypothyroidism. 2. Free thyroxine, i.e. FT4, has the same meaning as above. 3. Thyroid stimulating hormone (TSH) is secreted by the gland. How to check whether your immune system is normal. 4. Anti-thyroglobulin antibodies, namely Anti-TG, can diagnose whether you have thyroiditis. 5. Anti-thyroid peroxidase antibodies, namely Anti-TPO, are related to hypothyroidism or Hashimoto's disease. For these tests, it doesn't matter whether you are fasting before the test or not.

However, when checking thyroid function indicators, they are often checked together with other things, such as liver function. In this case, you must be on an empty stomach. If you are not fasting, it will have a great impact on the numbers. Of course, if you check it together with blood sugar, you should not eat breakfast. If you simply do a blood test for hyperthyroidism, eating breakfast will not have any impact.

If the thyroid disease affects the endocrine function, it can be reflected through blood tests. Blood tests for thyroid function generally require fasting, otherwise it may affect the test results. Check under the guidance of a doctor. If necessary, a thyroid color ultrasound will be required. Please go to the hospital for medical treatment at any time if you feel unwell.