This is my lab result free t3 (liothyronine) 4.58 free t4 13.74 tsh 8.45 should i be taken medications or not? ,main symptoms are hair shedding and weight gain

Take levothyroxine: Hi. You may want to repeat the labs for confirmation and check thyroid autoantibodies for etiology, but yes, those labs taken at face value suggest you should be taking levothyroxine. It is possible, however, that your symptoms are not caused by this mild hypothyroidism. Only by taking l-thyroxine and normalizing your TSH for a few months will you know. Good luck!