I do not know if anyone remembers me when I discussed my daughter who had felt extremely unwell for a couple of years and more and had bbeen tested for thyroid as it is in my family. They kept saying everything was in range. When eventually she really pushed for all the tests you suggest on here. It happens that her B12 was 170 and was immediately put on B12 injections. Thank you to all those on here who made her persist with the doctor.