Ok so your TSH is normal and your T3/T4 are low in the normal range because you’ve replaced them with some T1/T2. Every value is in the normal range. Problem?
It makes no sense at all to call it pituitary failure (central hypothyroidism) - that would imply low TSH. You could argue that it’s successfully medicated peripheral hypothyroidism if anything, though that’s a stretch.
Ok so your TSH is normal and your T3/T4 are low in the normal range because you’ve replaced them with some T1/T2. Every value is in the normal range. Problem?
It makes no sense at all to call it pituitary failure (central hypothyroidism) - that would imply low TSH. You could argue that it’s successfully medicated peripheral hypothyroidism if anything, though that’s a stretch.