normal t3 and t4 levels but low tshlow tsh and normal t4high tsh levels normal t4high t3 and t4 levels and low tshlow tsh but normal t3 and t4low tsh normal t4 on levothyroxinelow tsh normal t4 on synthroidlow tsh levels normal t4low tsh low t4high tsh normal free t4normal level of t3 t4 and tshlow tsh low t3 low t4
