TSH 13.55 with a low Free T4 is overt hypothyroidism, so thyroxine is clearly indicated, not optional. Dose is weight based and started under supervision, usually a low-to-moderate morning dose on an empty stomach, then TSH rechecked at 6-8 weeks and titrated. Free T3 adds nothing to your decision; anti-TPO is worth doing once, only to confirm Hashimoto's as the cause. Do not self-start or copy someone else's dose - undertreatment keeps you tired, overtreatment gives palpitations and bone loss. Send me the report on a Practo consult or come to my OPD at Synergy Miraj and I will fix the exact starting dose for you.
Next Steps
Get anti-TPO done and start treatment on a proper prescription, then repeat
TSH after 6-8 weeks to adjust. Keep
calcium and iron 4 hours apart from the
thyroid tablet. Book a consult with me on Practo with your report and I will start you correctly.