I agree with armywife92 about the
Vitamin D. Reading between the lines, i thought about Low
Vitamin D often being associated with being hypothyroid, and since you were tested for TSH and FT4, I wondered if perhaps you had symptoms that resulted in these tests, especially for thyroid.
I imagine that with your TSH being within the old reference range listed, and your Free T4 being in range, that the doctor decided you were "normal" as far as thyroid issues.