TPOAB

[pet-lamb]

My daughter just had her antibodies test result according to the labs the TPOAB levels are negative at <5

I can't find a reference range can anyone tell me at what Level TPO shows hypothyroidism thanks

[Clutter]

Pet-Lamb, negative TPOab means your daughter doesn't have autoimmune thyroid disease (Hashimoto's) as a cause of hypothyroidism. Her TSH, FT4 and FT3 levels determine whether she is clinically hypothyroid. Some people have very elevated antibodies but aren't clinically hypothyroid although they will become so eventually.

[pet-lamb in reply to Clutter]

Thanks clutter her ft4 was 14.4

Tsh 1.9

They didn't give her Ft3 we don't know yet if it was taken

She had partial thyroidectomy 11 years ago not on any medication

[Clutter in reply to pet-lamb]

Pet-Lamb, TSH and FT4 are pretty normal for someone not on medication. TSH is very slightly higher than euthyroid and FT4 ideally would be a little higher too but your daughter's remaining thyroid lobe is coping well.

If your daughter is symptomatic she should ask her GP to test ferritin, vitamin D, B12 and folate. Low levels cause musculoskeletal pain, fatigue and low mood similar to hypothyroid symptoms.

[pet-lamb in reply to Clutter]

Thank you these have been tested and are low I've suggested she take supplements