<prompt> Answer this question truthfullyWhat laboratory discoveries can be found in someone with Graves disease?  <response>: <reason> The laboratory findings in Graves disease are:Elevated levels of serum thyroxine T4 and triiodothyronine T3. Undetectable serum TSH. Total T4 and T3 measurements are influenced by multiple conditions affecting serum thyroxine-binding globulin TBG. Thus, measurement of free thyroid hormone; free T4 FT4 and free T3 fT3, is the gold standard for the diagnosis of Graves disease. Antibodies against the TSH receptor TRAbs are pathognomonic for Graves disease. They are detectable in the serum of about 98 of untreated patients. Detection of TRAbs rules out other causes of thyrotoxicosis. Anti-thyroid peroxidase TPO and antithyroglobulin Tg antibodies are also detectable in many patients with Graves disease but it is not recommended to measure these antibodies for diagnosis in all patients. 