I had bloodwork done because of exhaustion and other symptoms. Levels came back T3 (liothyronine) at 1.21 (.87-1.78) TSH 2.65 (.35-5.5) ft4. 78. Hypothyroidism?

Your numbers. Are technically normal, but may be slightly inappropriate for your age. Some endocrinologist may give you a clinical trial of low dose brand name T4 replacement and see if you improve, as long as your lab remains in the normal range. Check w/your doctor for a referral. These levels will not cause any symptoms you would be aware of.