Hypothyroid - Most Recent TSH High
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I'm trying to get all my ducks in a row to get a 3rd class medical. I am on levothyroxine sodium due to an underactive thyroid and it is under control. However, my most recent bloodwork shows a high TSH level (5.48) from missing a dose a day before the bloodwork was done. There is a year's worth of normal levels before that. I know I will need a clinical progress report from the treating physician anyway, but I don't know if that one high level will cause me issues even though it can be explained. I'm not sure how the “Normal TSH within the last one year” part of the hypothyroid worksheet is interpreted.

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1373 Posts

If there's a lesson here, it's “don't give a blood sample the day after you skipped meds.”

As for the poster, check with AOPA Medical or Dr. Bruce Chien at www.aeromedicaldoc.com.

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Yeah, I wouldn't have done it if I realized I missed that day. That realization came a few hours too late. Live and learn I guess. 

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Actually, that does not matter.  It takes 3 weeks approximately to stabilize the TSH on change in meds.  So missing 1 day means nothing.  Ask your doctor.  Having said that.  TSH is an approximation.  5.48 to me would be fine.  Goes up or down a little over time.