What is the Optimal Time to Take a Thyroid Test?

Updated on July 26, 2021

Do you suspect that you may have a problem with your thyroid gland? If so, you are not alone. It is estimated that a staggering 30 million Americans suffer from some type of thyroid issue. In fact, many of these problems remain undiagnosed for years at a time. This is why it is always prudent to speak with your physician.

The first step involves getting a thyroid test so that the root of the problem can be discovered. The good news is that these tests are quick and they will normally provide accurate results in no time at all. So, when is the best time to take a thyroid test and what solutions are available if an issue is found?

All About the Timing

In theory, a thyroid test (known as a thyroid function test or a “TFT”) can be performed at any time. There is still a substantial amount of evidence that certain times of the day are better than others. The main concern here is that minor chemical changes within your body can sometimes impact the results. This is why the majority of doctors feel that it is best to schedule a test during the morning hours.

Why is the morning a better time? The answer to this question involves a chemical known as thyroid stimulating hormone (TSH). The main takeaway point here is that hormonal levels within your body will fluctuate throughout the day. So, accuracy may be a concern. Mornings are thought to be optimal due to the fact that levels of TSH are higher and more accurate in the morning. This is important, as you might otherwise be misdiagnosed. Those who wait until they afternoon may be provided with incorrect results. 

To put this observation into perspective, a study conducted in 2004 found that even late-morning tests might not offer reliable results. In fact, levels of TSH were up to 24 percent lower when compared to examinations that took place before eight o’clock in the morning. To put it simply, the earlier the better in regards to thyroid testing. 

What About Fasting?

Should you fast before a thyroid examination? Most doctors do not recommend fasting, as a lack of food could falsely impact the levels of TSH within your bloodstream. Of course, it is also wise not to overeat the day before your blood will be taken. 

Treatment Options

Assuming that a problem is found, both natural supplements and prescription medications can provide amazing results. Some medications include Levoxyl, Unithroid and Levothroid. In the event that you prefer natural remedies, it may be wise to try supplements such as Armour Thyroid. The good news is you can examine the ingredients of Armour Thyroid here to learn more.

As we can see, it is wise to schedule a thyroid test during the early morning hours. If you feel that a problem may exist, it is important to consult with a medical professional as soon as possible. You will be pleasantly surprised with the number of options at your disposal. 

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