Thank you for the fast reply!
I do believe he is also trying to get the iodine uptake & scan approved by insurance.
I will ask about the graves specific testing at my follow up appointment.
My major concern after getting the radiology report was the size of the nodules (but could also be common size for most) along with all the other lab work coming back normal outside of the TSH.
It seems the size listed were in the range for concern, hence the biopsy being ordered.