TSH is 37.5 T3 and T4 are normal. She underwent treatment for hyperthyroidism in INMAS in April 2017. RAIU investigation done on 10.4.17. 2hrs 1.6% 24hrs 0.9%. RAIU done in INMAS, Delhi. No children. Age 43. Sex female. Menopause already happened. Kindly advise on such high TSH level after 1.5 months of hyperthyroidism.