The Report reads as follows:-
THYROID FUNCTION TESTS (Profile I)
Test Result Units Normal range
Total T3, serum 121.3 ng/dl 60.0 - 181.0
Total T4, serum 5.26 mcg/dl 4.50 - 10.90
TSH (Ultrasensitive), serum 0.564 microlU/ml 0.35 - 5.50
Right now, besides swelling, have muscular pain and little tiredness (but not sure whether the muscular pain and tiredness is connected to this, as muscular pain is felt for the past two years). Besides this no other problem
What, if any, symptoms do you have?
What are the reference ranges for the T3 and T4? Ranges vary lab to lab and have to come from your own report. Are they Free T3 and Free T4, or are they Total T3 and Total T4? If they are tests for the totals, they are of limited value, as those tests are considered obsolete. Free T3 and Free T4 are the active hormones.
The swelling/enlargement indicates an immune issue, either Graves Disease or Hashimoto's Thyroiditis. Graves Disease is associated with hyperthyroidism, while Hashimoto's is most often associated with hypothyroidism, but in early stages, can be characterized by periods of hyperthyroidism and/or swinging from hyper to hypo, to normal.
You need to get antibody tests done to confirm/rule out either/both. Thyroid Stimulating Immunoglobulin (TSI) is the definitive test for Graves. Thyroid Perxoidase Antibodies (TPOab) and Thyroglobulin Antibodies (TgAB) are the markers for Hashimoto's. You need them both, because some people have one or the other, some have both.