low tsh and normal t4low tsh levels with normal t3 and t4low tsh but normal t3 and t4low tsh low t3 low t4low tsh normal t4 on levothyroxinelow tsh normal t4 on synthroidlow tsh levels normal t4low tsh low t4low tsh levels treatmentlow normal tshhigh t3 and t4 levels and low tshelevated tsh with normal t3 and t4
