Second follow up
The range for normal given by a lab is one thing and the target levels deemed by experts as desirable is another thing.
Most thyroid experts aim to keep the TSH
in the range of 0.4 to 2.5, even though the normal range goes up to 4.2 or thereabouts. Studies tend to show this makes patients feel best when they are treated with eltroxin
type medications while keeping the TSH closer to 1 or so.
Before surgery your TSH was in the normal range of 0.43 and it is normally expected to go up significantly after your thyroid is removed. If you were not started on Eltroxine, your TSH would eventually rise to 100 or more. So it is routine to start with a given dose but it has to be adjusted based on the individual's response to that dose of Eltroxine, and quickly adjusted to arrive at the right stable dose. Because there is no way to predict how much Eltroxine a given person will require after thyroid surgery
. Person A may need 100 and person B may need 175 mcg, despite both undergoing the same surgery (ie thyroid removal). The simplest way to adjust is to go by the lab test results of TSH and free T4