Taking your thyroid med a few hours before getting a blood draw will raise your Free T4 level.
TSH levels follow a daily rythmn. TSH is lowest in the morning.
It may raise half a point during the day.
So yes, that would have an affect on the tests.
When i did the blood work at the walk-in clinic, it was in the morning, after i took my thyroid pills. Could this affect my thyroid levels?
Maybe that's why my free t4 was so high and my tsh was below normal levels?
Maybe break the 25mcg pills in half, with your doctor's permission? Stopping the med didn't seem to work for you.
12.5mcg of Synthroid is practically nothing. Maybe try stopping the med again and see how you get along this time?
Maybe you need Adrenal tests run.