Your RBC will likely be slightly elevated, though that shouldn't matter a whole lot unless you were borderline high anyway and now your doc thinks its too high.
The thyroid values will be slightly influenced, but probably for the better unless you have a poorly functioning hormone feedback loop (which is possible since you are on TRT). Though I certainly wouldn't sweat it.
If things come back out of whack, just knock your T dose down for a little while and retest. Blame it on stress.
Vit D and Magnesium won't be affected.