I am doubtful that chronic thyroiditis relates to Graves'; however, it should be easy to understand your condition if tests were done for Free T4, Free T3, TSH, TSI or TPO ab or TG ab. If any of those were done, please post results and ranges shown on the lab report. Also, please tell us about any symptoms you have.
From the internet: Both Graves' disease and chronic thyroiditis (Hashimoto's thyroiditis) are autoimmune diseases of thyroid gland. Graves' disease is caused by stimulation of TSH receptor located on the thyroid gland by an antibody, which is known as TSH receptor antibody
That agrees with my expressed doubt about chronic thyroiditis relating to Graves'. "Both Graves' and chronic thyroiditis (Hashi's)".... It leaves my question about test results and ranges on the lab report. Also, what symptoms do you have?