The Unusual Late-Onset Graves’ Disease following Hashimoto’s Related Hypothyroidism: A Case Report and Literature Review

Table 2

Autoantibodies’ trend during the clinical follow-up.

Antibody	2015	2019
TPO Ab (0–34 IU/ml)	>1000	>600
Antithyroglobulin	0.93 (<0.6 Units)	585 (0–115 IU/mL)
Anti-TSHR (<1.75 IU/L)	___	12.2

Different units were used for the antithyroglobulin antibodies test. The first value was indicative of weak positivity; however, the second reading was strongly positive. TPO Ab = thyroid peroxidase antibody, Anti-TSHR = anti-thyroid-stimulating hormone receptor antibody.