My sister has been suffering from
Thyroid since 3 years. She has been on medication ever since then. In July, her
TSH level was 6.02. She switched to Thyronorm 75 from Thyronorm 62.5. Yesterday, she got her Thyroid profile repeated. Now her TSH is increased to 49.58. She has never missed dose of her medicine. Is such drastic fluctuation possible? The lab that performed the test is Thyrocare.