Likely subclinical hyperthyroidism (ie mild hyperthyroidism) but need to consider unlikely pituitary source -- so would look at other pituitary labs like prolactin. Would repeat labs in 6 weeks and re-evaluate esp if you have no symptoms of hyperthyroidism at this point. The lexapro is not known to decrease TSH like this.
Additional history. I do take Lexapro 10 mg x 9 months for anxiety and Klonopin to help sleep.
Thanks for this forum. It is soooo helpful. Labs drawn 10/23.
Prolactin value value 9.9 range 3.7-17.9
Free testosterone value 56 range 47-244
Sed Rate value 1 range 0-15
So low sed and testosterone. Can we rule out pituitary? What are your thoughts? Is something off that I need to be concerned about? What should I do next? We plan to repeat TSH in six weeks.