What is “normal” for TSH? This is controversial. But all you need to know (as far as I’m concerned) is that at least some endocrinologists have spoken out, saying that the upper limit of the normal range ought to be 2.5 rather than upwards of 4.Wartofsky
This means that we can therefore consider using thyroid hormone as a possible mood treatment at much lower TSH levels without being thought to be “radical”, or practicing “cowboy medicine” (ready, fire, aim). Instead of waiting for values above 4.25, as in my lab; or values over 10, as some endocrinologists have said for years, we can justify a trial of adding thyroid hormone when TSH is 2.5 or higher. That is not the usual practice.
This different interpretation of “the normal range” is based on the fact that TSH is not centered around a middle value (not a “bell-shaped curve” ) as in this diagram:
What is “normal” for TSH? This is controversial. But all you need to know (as far as I’m concerned) is that at least some endocrinologists have spoken out, saying that the upper limit of the normal range ought to be 2.5 rather than upwards of 4.Wartofsky
This means that we can therefore consider using thyroid hormone as a possible mood treatment at much lower TSH levels without being thought to be “radical”, or practicing “cowboy medicine” (ready, fire, aim). Instead of waiting for values above 4.25, as in my lab; or values over 10, as some endocrinologists have said for years, we can justify a trial of adding thyroid hormone when TSH is 2.5 or higher. That is not the usual practice.
This different interpretation of “the normal range” is based on the fact that TSH is not centered around a middle value (not a “bell-shaped curve” ) as in this diagram:
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