 [ Symptoms ] my t3 tsh level is normal t4 is high by 3 what is the prescription of medciation [ Disease ] i think there is some confusion here let me see if i can clear things up t3 t4 and tsh are individual thyroid tests doctors usually look most closely at the tsh value because that tells them whether or not your thyroid is functioning normally if your tsh value is within a normal range then you probably do not need to take thyroid medication in general a slightly high t4 test would not be cause for alarm or treatment in fact many medications especially birth control pills or female hormone replacement products can cause a slight elevation of the t4 result you should discuss your thyroid test results with your health care provider for information specific to your case he or she will be happy to explain what these test results mean and whether or not you need treatment wishing you well