Does thyroid function require fasting?

There are various inspection measures in people's daily lives, and these inspection methods have some precautions. For example, fasting during the inspection is a very common precaution. Fasting examination can get the test results more accurately and quickly, but if you don't fast, there may be some problems. Thyroid function test is a common test method in people's lives, so does fasting require thyroid function test?

For the five thyroid function tests, whether you are fasting or not has little impact on the results. You can do the examination on an empty stomach, but if you need to do other tests in addition to the five thyroid function tests, such as liver function, blood lipids, etc., or if you are not sure whether you need to do other tests, it is recommended that you go to the hospital on an empty stomach. For more details, please consult the relevant department of the local hospital

If the current examination actually includes thyroid function tests and other ultrasound examinations. Generally speaking, ultrasound examination is performed on the surface of the thyroid gland and has nothing to do with diet. Thyroid function tests include what we call T3T4, as well as immunological antibody indicators. Sometimes, if water is consumed during meals, it may affect the extraction of serum after centrifugation. If the serum contains a lot of oil, the entire testing process may be difficult to test and will also affect the operation of the machine.

When checking hyperthyroidism indicators, they are often checked together with other tests, such as liver function. In this case, you must be fasting. 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 can't eat breakfast. If you simply draw blood for hyperthyroidism examination, eating breakfast will not have any effect.

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 the immune system is normal. 4. Anti-thyroglobulin antibodies, namely Anti-TG, can diagnose whether there is 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.