Dr. Westin Childs Podcast: Thyroid | Weight Loss | Hormones

There is a big difference between optimal thyroid lab tests and normal lab tests. The reference range for your lab tests includes both healthy and unhealthy people that you are compared to. By creating a tighter reference range for your lab tests you can ensure that you are being compared to only healthy people. In this video, I go over 2 examples of how to calculate this reference range for both Free T3 and free T4 and show you exactly how to do it. Free T3 example: You generally want your free T3 in the top 30% of the reference range in order to be optimal: Reference range = 1.7 to 3.7 Step #1. Find the spread between the range by subtracting the top end of the range from the bottom end. In this case, it’s 3.7 and 1.7. So, 3.7 minus 1.7 equals 2.0. This number represents the total range between the top and bottom end of the reference range. This range is often very large and so it’s important to find out where you fall within it. Step #2. Multiply the spread by the percentage value that you