Free T4 (thyroxine) Blood Tests

The Free T4 test is a blood test that measures the level of a hormone called thyroxine in your body. Thyroxine is produced by the thyroid gland and plays a crucial role in regulating your metabolism, energy levels, and growth. This test specifically measures the amount of thyroxine that is not bound to proteins in your blood, which is known as "free" thyroxine.

The Free T4 test is commonly used to check for thyroid problems, such as an overactive or underactive thyroid. If your thyroid is not functioning properly, it can lead to symptoms like fatigue, weight changes, mood swings, and difficulty concentrating. It can also affect fertility.

By measuring the level of free thyroxine in your blood, you can determine if your thyroid is producing too much or too little hormone.

This test is important because thyroid problems are quite common, affecting millions of people worldwide.

By diagnosing and treating thyroid disorders, you can help improve your overall health and well-being. 

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