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 t4tsh t3 t4 interpretationhyperthyroidism tsh t3 t4high tsh with normal t3 and t4t3 t4 tsh meaningthyroid t3 t4 tsh
