Therapy for hypothyroidism is monitored at approximately six week intervals until stable. During these visits, a blood sample is checked for TSH to determine if the appropriate amount of thyroid replacement is being given. The goal is to maintain the TSH within normal limits. Depending on the lab used, the absolute values may vary, but in general, a normal TSH range is between to /ml. Once stable, the TSH can be checked yearly. Over-treating hypothyroidism with excessive thyroid medication is potentially harmful and can cause problems with heart palpitations and blood pressure control and can also contribute to osteoporosis . Every effort should be made to keep the TSH within the normal range.
A very common problem that we see in our office everyday is Thyroid Underconversion . It is now widely accepted that there are 6 major patterns of thyroid dysfunction and only 1 of these patterns responds well to thyroid replacement. For the purpose of this post, I will discuss one of the more common patterns called Thyroid underconversion or Low T3 . Patients with Thyroid problems often suffer terrible with a laundry list of thyroid symptoms, but when the basic thyroid panel comes back the two main markers(TSH,T4) for hypothyroidism are normal. Why does this happen? If you read on, you will understand.
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