I suffered from terrible anxiety and OCD that seems to come and go over time. My mother had exactly the same disorder like myself. She was diagnosed with an under active thyroid and autoimmune thyroid issue. On taking medication to sort her levels she has been free from the mental health problems.I recently started getting the issue again and took a thyroid function blood test. All levels were within range but my FT3 was slightly elevated at 8.97 pmol /L. I would love an expert opinion on if periodic FT3 level increases could be causing the anxiety, depression, and OCD issues. I am currently on Sertraline 150 mg. Coupled with my mother's exact issue, and cure, I am not sure what these results could mean? What should my next step be and could this elevated FT3 cause my anxiety to start?