Best time for thyroid test

Some blood tests require you to fast, or not eat, for a certain length of time before the test. This is so your results will be more accurate, and not altered by any recent food.

Certain components of your blood, such as blood sugar, do change between meals and periods of fasting. Blood tests that require fasting include cholesterol or lipid tests, and blood glucose tests.

Particular types of foods, or any meal in general, can affect the results of these tests.

Other types of medical tests may also require fasting, but a healthcare professional will give you specific instructions when this is necessary.

Thyroid testing is not always part of a comprehensive health exam, but you can request it if you think you need it.

Usually, healthcare professionals order thyroid tests if you have a family history of thyroid issues, or you have symptoms that are common to thyroid disorders.

The two most common thyroid disorders are an underactive thyroid gland () and an overactive thyroid gland (hyperthyroidism).

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